• British Standard Descriptions 29-b-

British Standard Descriptions

British standard fasteners

Fastener descriptions to British standards, when it comes to Inch washers the BS fastener standard is still in wide use globally.

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               BRITISH FASTENER STANDARDS                  

STANDARDDESCRIPTIONTHREADMATERIAL
BS 21Socket Taper Pressure Pipe PlugsBSPT 3/4 TaperAlloy Steel
BS 21Socket Taper Pressure Pipe PlugsBSPT 3/4 Taper   Stainless-Steel-A4
BS 57Slotted Mushroom Head Machine ScrewBAGrade-4.8
BS 57Slotted Cheese Head Machine ScrewBAGrade-4.8
BS 57Pozi Countersunk Head Machine ScrewBAGrade-4.8
BS 57Slotted Countersunk Head Machine ScrewBAGrade-4.8
BS 57Slotted Raised Countersunk  Machine ScrewBAGrade-4.8
BS 57Pozi Raised Countersunk Machine ScrewBAGrade-4.8
BS 57Slotted Pan Head Machine ScrewBAGrade-4.8
BS 57Hexagon Head Set ScrewBAGrade-R
BS 57Hexagon Head Set ScrewBAGrade-A-Steel
BS 57Hexagon Full NutBAGrade-A-Steel
BS 57Hexagon Lock NutBAGrade-A-Steel
BS 57Hexagon Head Set ScrewBAStainless-Steel-A2
BS 57Hexagon Full NutBAStainless-Steel
BS 57Hexagon Lock NutBAStainless-Steel
BS 57Hexagon Full NutBABrass
BS 57Pozi Mushroom Head Machine ScrewBAGrade-4.8
BS 57Pozi Pan Head Machine ScrewBAGrade-4.8
BS 57Slotted Round Head Machine ScrewBAGrade-4.8
BS 325Cup Head Nib BoltBSW WhitworthGrade-4.6
BS 325Black Square NutBSW WhitworthClass-4
BS 325Hexagon Black Full NutBSW WhitworthGrade-A-Steel
BS 325Cup Square Neck Carriage Bolt with NutBSW WhitworthGrade-4.6
BS 325Countersunk Square Plow BoltBSW WhitworthGrade-4.6
BS 325Countersunk Long Square Plow Bolt For WoodBSW WhitworthGrade-4.6
BS 325Oval Neck Cup Head BoltsBSW WhitworthGrade-4.6
BS 450Slotted Mushroom Head Machine ScrewBSFGrade-4.8
BS 450Slotted Mushroom Head Machine ScrewBSW WhitworthGrade-4.8
BS 450Slotted Cheese Head Machine ScrewBSFGrade-4.8
BS 450Slotted Cheese Head Machine ScrewBSW WhitworthGrade-4.8
BS 450Pozi Countersunk Head Machine ScrewBSW WhitworthGrade-4.8
BS 450Slotted Countersunk Head Machine ScrewBSFGrade-4.8
BS 450Slotted Countersunk Head Machine ScrewBSW WhitworthGrade-4.8
BS 450Slotted Pan Head Machine ScrewBSFGrade-4.8
BS 450Slotted Pan Head Machine ScrewBSW WhitworthGrade-4.8
BS 450Slotted Raised Countersunk  Machine ScrewBSFGrade-4.8
BS 450Slotted Raised Countersunk  Machine ScrewBSW WhitworthGrade-4.8
BS 450Pozi Raised Cheese Head Machine ScrewBSW WhitworthGrade-4.8
BS 450Slotted Raised Cheese Head Machine ScrewBSFGrade-4.8
BS 450Slotted Raised Cheese Head Machine ScrewBSW WhitworthGrade-4.8
BS 450Pozi Raised Countersunk Machine ScrewBSW WhitworthGrade-4.8
BS 450Pozi Raised Cheese Head Machine ScrewBSFGrade-4.8
BS 450Pozi Countersunk Head Machine ScrewBSFGrade-4.8
BS 450Pozi Raised Countersunk Machine ScrewBSFGrade-4.8
BS 450Pozi Mushroom Head Machine ScrewBSFGrade-4.8
BS 450Pozi Mushroom Head Machine ScrewBSW WhitworthGrade-4.8
BS 450Pozi Pan Head Machine ScrewBSFGrade-4.8
BS 450Pozi Pan Head Machine ScrewBSW WhitworthGrade-4.8
BS 450Slotted Round Head Machine ScrewBSFGrade-4.8
BS 450Slotted Round Head Machine ScrewBSW WhitworthGrade-4.8
BS 450Slotted Round Head Machine ScrewBSW WhitworthBrass
BS 856Wing Nut  Mickey Mouse Type DCBSW Whitworth Steel 
BS 856Wing Nut  Type CFBSW Whitworth Steel 
BS 856Wing Nut  Mickey Mouse Type DCBSW WhitworthStainless-Steel
BS 856Wing Nut  Type CFBSW WhitworthStainless-Steel
BS 856Wing Nut  Mickey Mouse Type DCBSW Whitworth Brass 
BS 856Wing Nut  Type CFBSW Whitworth Brass 
BS 856Wing Nut  Mickey Mouse Type DCBSF Steel 
BS 856Wing Nut  Type CFBSF Steel 
BS 856Wing Nut  Mickey Mouse Type DCBSFStainless-Steel
BS 856Wing Nut  Type CFBSFStainless-Steel
BS 856Wing Nut  Mickey Mouse Type DCBSF Brass 
BS 856Wing Nut  Type CFBSF Brass 
BS 856Wing Nut  Mickey Mouse Type DCBA Steel 
BS 856Wing Nut  Type CFBA Steel 
BS 856Wing Nut  Mickey Mouse Type DCBAStainless-Steel
BS 856Wing Nut  Type CFBAStainless-Steel
BS 856Wing Nut  Mickey Mouse Type DCBA Brass 
BS 856Wing Nut  Type CFBA Brass 
BS 1083Hexagon Head Bolt BSW WhitworthGrade-R
BS 1083Hexagon Head Set ScrewBSW WhitworthGrade-R
BS 1083Hexagon Full NutBSW WhitworthGrade-A-Steel
BS 1083Hexagon Lock NutBSW WhitworthGrade-A-Steel
BS 1083Hexagon Lock Nut Thicker 3 SizesBSW WhitworthGrade-A-Steel
BS 1083Hexagon Head Bolt BSW WhitworthStainless-Steel-A2
BS 1083Hexagon Head Set ScrewBSW WhitworthStainless-Steel-A2
BS 1083Hexagon Full NutBSW WhitworthStainless-Steel
BS 1083Hexagon Lock NutBSW WhitworthStainless-Steel
BS 1083Hexagon Lock Nut Thicker 3 SizesBSW WhitworthStainless-Steel
BS 1083Slotted and Castle Hexagon NutBSW WhitworthSteel
BS 1083Hexagon Head Bolt BSFGrade-R
BS 1083Hexagon Head Set ScrewBSFGrade-R
BS 1083Hexagon Full NutBSFGrade-A-Steel
BS 1083Hexagon Lock NutBSFGrade-A-Steel
BS 1083Hexagon Lock Nut Thicker 3 SizesBSFGrade-A-Steel
BS 1083Hexagon Head Bolt BSFStainless-Steel-A2
BS 1083Hexagon Head Set ScrewBSFStainless-Steel-A2
BS 1083Hexagon Full NutBSFStainless-Steel
BS 1083Hexagon Lock NutBSFStainless-Steel
BS 1083Hexagon Lock Nut Thicker 3 SizesBSFStainless-Steel
BS 1083Slotted and Castle Hexagon NutBSFSteel
BS 1210Pozi Countersunk Twin Thread Wood ScrewMetricSteel
BS 1210Pozi Countersunk Wood ScrewInchSteel
BS 2470Socket Cap Screw 1936UNFGrade-12.9
BS 2470Socket Cap Screw 1936UNCGrade-12.9
BS 2470Socket Cap Screw 1936UNCStainless-Steel 18/8-304-A2
BS 2470Hexagon Keys Short Arm InchAlloy Steel
BS 2470Socket Cap Screw 1936UNFStainless-Steel 18/8-304-A2
BS 2470Socket Set Screw Cone PointBSW WhitworthGrade-14.9-45H
BS 2470Socket Set Screw Cup PointBSW WhitworthGrade-14.9-45H
BS 2470Socket Set Screw Dog PointBSW WhitworthGrade-14.9-45H
BS 2470Socket Set Screw Flat PointBSW WhitworthGrade-14.9-45H
BS 2470Socket Cap ScrewBSW WhitworthGrade-X(12.9)
BS 2470Socket Countersunk ScrewBSW WhitworthGrade-X(12.9)
BS 2470Hexagon Socket Shoulder ScrewBSW WhitworthGrade-X(12.9)
BS 2470Socket Cap ScrewBSW WhitworthStainless-Steel 18/8-304-A2
BS 2470Socket Countersunk ScrewBSW WhitworthStainless-Steel 18/8-304-A2
BS 2470Socket Set Screw Cone PointBSFGrade-14.9-45H
BS 2470Socket Set Screw Cup PointBSFGrade-14.9-45H
BS 2470Socket Set Screw Dog PointBSFGrade-14.9-45H
BS 2470Socket Set Screw Flat PointBSFGrade-14.9-45H
BS 2470Socket Cap ScrewBSFGrade-X(12.9)
BS 2470Socket Countersunk ScrewBSFGrade-X(12.9)
BS 2470Socket Cap ScrewBSFStainless-Steel 18/8-304-A2
BS 2470Socket Countersunk ScrewBSFStainless-Steel 18/8-304-A2
BS 2470Socket Set Screw Cone PointBAGrade-14.9-45H
BS 2470Socket Set Screw Cup PointBAGrade-14.9-45H
BS 2470Socket Set Screw Dog PointBAGrade-14.9-45H
BS 2470Socket Set Screw Flat PointBAGrade-14.9-45H
BS 2470Socket Cap ScrewBAGrade-X(12.9)
BS 2470Socket Countersunk ScrewBAGrade-X(12.9)
BS 2470Socket Cap ScrewBAStainless-Steel 18/8-304-A2
BS 2470Socket Countersunk ScrewBAStainless-Steel 18/8-304-A2
BS 2693Engineers Stud Metal End =1.1/2 DBSFSteel
BS 2693Engineers Stud Metal End =1.1/2 DBSW WhitworthSteel
BS 3032D Shackle Pins AInchSteel
BS 3032D Shackle Pins CInchSteel
BS 3032D Shackle Pins EInchSteel
BS 3032D Shackle Pins F with Forelock PinInchSteel
BS 3410Inch Washer Table 1 BAInchSteel
BS 3410Inch Washer Table 2 BAInchSteel
BS 3410Inch Washer Table 3 HeavyInchSteel
BS 3410Inch Washer Table 3 LightInchSteel
BS 3410Inch Washer Table 4 HeavyInchSteel
BS 3410Inch Washer Table 4 LightInchSteel
BS 3410Inch Washer Table 5InchSteel
BS 3410Inch Washer Table 6InchSteel
BS 3410Inch Washer Table 7InchSteel
BS 3410Inch Washer Table 8InchSteel
BS 3410Inch Washer Table 9InchSteel
BS 3410Inch Washer Table 1 BAInchStainless-Steel
BS 3410Inch Washer Table 2 BAInchStainless-Steel
BS 3410Inch Washer Table 3 HeavyInchStainless-Steel
BS 3410Inch Washer Table 3 LightInchStainless-Steel
BS 3410Inch Washer Table 4 HeavyInchStainless-Steel
BS 3410Inch Washer Table 4 LightInchStainless-Steel
BS 3410Inch Washer Table 5InchStainless-Steel
BS 3410Inch Washer Table 6InchStainless-Steel
BS 3410Inch Washer Table 7InchStainless-Steel
BS 3410Inch Washer Table 8InchStainless-Steel
BS 3410Inch Washer Table 9InchStainless-Steel
BS 3410Inch Washer Table 1 BAInchBrass
BS 3410Inch Washer Table 2 BAInchBrass
BS 3410Inch Washer Table 3 HeavyInchBrass
BS 3410Inch Washer Table 3 LightInchBrass
BS 3410Inch Washer Table 4 HeavyInchBrass
BS 3410Inch Washer Table 4 LightInchBrass
BS 3410Inch Washer Table 5InchBrass
BS 3410Inch Washer Table 6InchBrass
BS 3410Inch Washer Table 7InchBrass
BS 3410Inch Washer Table 8InchBrass
BS 3410Inch Washer Table 9InchBrass
BS 3410Inch Washer Table 1 BAInchNylon-66
BS 4162Flange BoltMetric CoarseSteel
BS 4168Hexagon Socket Shoulder Screw f9Metric CoarseGrade-12.9
BS 4174Slotted Countersunk Head Self Tapping Screw ABInchCase Hardened Steel
BS 4174Slotted Countersunk Head Self Tapping Screw BInchCase Hardened Steel
BS 4174Slotted Raised Countersunk Head Self Tapping Screw ABInchCase Hardened Steel
BS 4174Slotted Raised Countersunk Head Self Tapping Screw BInchCase Hardened Steel
BS 4174Hexagon Head Self Tapping Screw ABInchCase Hardened Steel
BS 4174Hexagon Head Self Tapping Screw BInchCase Hardened Steel
BS 4174Pozi Countersunk Head Self Tapping Screw ABInchCase Hardened Steel
BS 4174Pozi Countersunk Head Self Tapping Screw BInchCase Hardened Steel
BS 4174Pozi Pan Head Self Tapping Screw ABInchCase Hardened Steel
BS 4174Pozi Pan Head Self Tapping Screw BInchCase Hardened Steel
BS 4174Slotted Pan Head Self Tapping Screw ABInchCase Hardened Steel
BS 4174Slotted Pan Head Self Tapping Screw BInchCase Hardened Steel
BS 4174Round Hammer Drive Screw 'U'InchSteel
BS 4174Round Hammer Drive Screw 'U'InchStainless-Steel-A2
BS 4174Round Hammer Drive Screw 'U'InchBrass
BS 4174Round Hammer Drive Screw 'U'InchCopper
BS 4183Hexagon Machine Screw NutMetric CoarseSteel
BS 4278Lifting Eye Bolt Forged with Shoulder CollarUNCSteel
BS 4320Form B Flat WasherMetricSteel
BS 4320Form C Flat WasherMetricSteel
BS 4320Form D Flat WasherMetricSteel
BS 4320Form E Flat WasherMetricSteel
BS 4320Form F Flat WasherMetricSteel
BS 4320Form G Flat WasherMetricSteel
BS 4320Table 6 Washer Greater Than M68MetricSteel
BS 4320Form B Flat WasherMetricStainless-Steel
BS 4320Form C Flat WasherMetricStainless-Steel
BS 4320Form D Flat WasherMetricStainless-Steel
BS 4320Form E Flat WasherMetricStainless-Steel
BS 4320Form F Flat WasherMetricStainless-Steel
BS 4320Form G Flat WasherMetricStainless-Steel
BS 4320Form B Flat WasherMetricBrass
BS 4320Form C Flat WasherMetricBrass
BS 4320Form B Flat WasherMetricAluminium
BS 4320Form B Flat WasherMetricNylon-66
BS 4320Form C Flat WasherMetricNylon-66
BS 4320Form B Flat WasherMetricPolypropylene
BS 4320Form B Flat WasherMetricTitanium
BS 4439Engineers Stud Metal End =1.1/2 D 4HMetric CoarseGrade-8.8
BS 4439Engineers Stud Metal End =1.1/2 D 4HMetric CoarseGrade-10.9
BS 4439Engineers Stud Metal End =1.1/2 D 4HMetric CoarseGrade-12.9
BS 4439Engineers Stud Metal End =1.1/2 D 4HMetric CoarseGrade-4.6
BS 4439Engineers Stud Metal End =1.1/2 D 4HMetric CoarseStainless-Steel
BS 4463Double Dished (Wave) Crinkle WasherMetricBeryllium Copper
BS 4929Nylon Insert Self Locking P-Type Thick NutUNCClass-8
BS 4929Nylon Insert Self Locking P-Type Thick NutUNFClass-8
BS 4929Nylon Insert Self Locking T Type Thin NutUNCClass-8
BS 4929Nylon Insert Self Locking T Type Thin NutUNFClass-8
BS 4933Cup Square Neck Carriage Bolt with NutMetric CoarseSteel
BS 7419Square Square Holding Down BoltsMetric CoarseGrade-4.6
BS 7419Square Square Holding Down BoltsMetric CoarseGrade-8.8
BS 1802ASingle Coil Square Section Spring WasherInchSpring-Steel
BS 1802ASingle Coil Square Section Spring WasherInchStainless-Steel
BS 1802ASingle Coil Square Section Spring WasherBASpring-Steel
BS 1802BRectangular Section Spring WasherInchSpring-Steel
BS 1802BRectangular Section Spring WasherInchStainless-Steel
BS 1802BRectangular Section Spring WasherBASpring-Steel
BS 1802DDouble Coil Rectangular Section Spring WasherInchSpring-Steel
BS 3032T1D Shackles Small with A PinInchSteel
BS 3032T2D Shackles Large with A PinInchSteel
BS 3032T3D Shackles Large Bow with A PinInchSteel
BS 3032T4D Shackles Small Bow with A PinInchSteel
BS 3974GU' Bolt Round Bend To GripMetric CoarseSteel
BS 3974GU' Bolt Round Bend To GripMetric CoarseStainless-Steel
BS 3974NGU' Bolt Round Bend Not To GripMetric CoarseSteel
BS 3974NGU' Bolt Round Bend Not To GripMetric CoarseStainless-Steel
BS 4278T1Lifting Eye Bolt Forged with Shoulder CollarMetric CoarseSteel
BS 4278T2Link Eye Bolt Forged with Shoulder CollarMetric CoarseSteel
BS 4278T3Dynamo Eye Bolt Forged with Shoulder CollarMetric CoarseSteel
BS 4278T4Lifting Eye Bolt Forged with Shoulder CollarBSW WhitworthSteel
BS 4278T5Link Eye Bolt Forged with Shoulder CollarBSW WhitworthSteel
BS 4278T5Link Eye Bolt Forged with Shoulder CollarUNCSteel
BS 4278T6Dynamo Eye Bolt Forged with Shoulder CollarBSW WhitworthSteel
BS 4278T6Dynamo Eye Bolt Forged with Shoulder CollarUNCSteel
BS 7670T3Weld Screw 3 Nibs Under HeadMetricSteel
BS 7670T4Hexagon Weld Nut Standard CollarMetric CoarseSteel
BSPHexagon Pipe Lock NutMetric CoarseSteel

 

British fastener standards became obsolete many years ago but are still in use in the fastener market and the fastener aftermarket. British standards for fasteners should have been overtaken by ISO standards in fasteners and EN standards in fasteners, but in practice, the German DIN standards became the fastener market leaders. DIN 933, DIN 931 and DIN 912 being the most popular Metric fastener products in the world. When it comes to Inch washers, the BS fastener standard is still extensively used.

 

 

 

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dimensional data and technical information shown on the fastenerdata website is in the public domain and has not been acquired through the standards agencies, it has been completed and compiled by fastenerdata and is for guidance only; where discrepancies are found they are subject to change without notice. fastenerdata makes no warranties or representations regarding the accuracy and validity of such information and data, and in order to ensure your interest we suggest you contact the relevant standards authority for total accuracy, fine detail and supporting information. fastenerdata is supported by paid advertisers and all pages may contain paid or sponsored content

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