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BS 4395-1 PDF

BS Metric high strength large hexagon head bolts 英标BS BS BS Metric high. Weight Calculator Tolerance. BS Specification For High Strength Friction Grip Bolts And Associated Nuts And Washers For Structural Engineering – General Grade. BS High strength friction grip bolts and associated nuts and washers for structural engineering. Metric series. General grade (AMD ) ( AMD.

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General grade Revised text Fig. The instrument shall be such that the total of inaccuracies due to measurement does not exceed i 5 micrometres. NUTS 15 15 15 15 16 16 4. The bolt should meet the minimum tensile strength given in Table 4 before fracture occurs.

NOTE 5 Hardness values are given for guidance only. Recommendations giving guidance in the use of this form of fastener are given in BS. Thread data and Standard thread series. The shank diameter shall be capable of acceptance by a ring gauge having an 43395-1 diameter equal to 4395-11 maximum shank diameter as specified in Column 2, Table 5 and subject to a tolerance of plus 0.

Only 10 be uscd for the lighter type of construction whcre practical conditions such as material thickness do not Warrant the usage of a larger slze bolt than M Such inspection shall be carried out in accordance with the 495-1 stated in 5.

Subject the bolt to an axial load at a testing machine crosshead Speed free running not greater than 26 mm per minute, until fracture occurs. With the sleeve in this Position it shall not be possible for a feeler gauge oi thickness equal to the squareness tolerance to entcr anywhere between the leading face of the nut and the face of the sleeve. This projection shall be rounded to avoid sharp e dp.

Thc rnanufacturcr shall afford the inspector all reasonable facilities, wlthout Charge, to satisfy him that the material is being furnished in accordance with the requirernents of this Standard. The manufacturer shall afford the inspector all reasonable facilities, without charge, to satisfy him that the material is being furnished in accordance with the requirements of this standard. Test Programme 30 E.

BS – Bolts S Up to and including 16 mm Over 16 mm up to and including 24 mm Over 24 mm 15 or fraction thereof 5 or fraction thereof 2 or fraction thereof 2 Bolts 2. Up to and including 16 mm Over 16 mm up to and including 24 mm Over 24 mm 15 or fraction thereof 5 or fraction thereof 2 or fraction thereof 3.

Standard angles of taper are 3″, 5″ and 8″ and the purchaser shall specify which of these angles are required. In view of the world trend towards the metric system, and having particular regard to the declared UK national policy for its adoption, it is strongly recommended that British industry should adopt the ISO metric screw thread system.

Diameter of washer face df Max. Scale 38 to 45 HRC. The ISO inch threads are the same as the existing Unified threads. Proof load t a t for nut C. When clearance makes it necessary, plain washers may be clipped on one side at a point not closer than seven-eighths of the bolt diameter from the centre of the washer.


The 44395-1 plate shall have a hardness of not less than Rockwell C Wedge loading of full size bolt BS’ High strength friction grip bolts for structural enginaring ‘, Part 1, ‘ General grade bolts ‘. Appendix E Recommended gauge for checking squareness of thread to face of nut See 3. The dimensions of Square taper washers given in this Standard have been based on the inch sizes at present given in BSsince it seems unlikely that BS 4 ‘ Structural steel sections ‘, will be revised to provide rational metric sizes for sections in the near 4935-1.

Limits and tolerances for coarse pitch series threads. The maximum content of sulphur and phosphorus shall not exceed 0. Part 1PDPD Heavy hex structural bolts. Chamfering, facing and marking of bolts 2. System HV – hexagon fit bolt and nut assemblies. For details of hs and other benefits contact Membership Administration.

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BSMethod for Brinell hardness test. Appendix B Testing of mechanical properties of steel bolts See 2. Compliance with a British Standard does not of itself confer immunity from legal obligations.

Part ball or cone shall be applicd either’on the top of Position of thc c! System HR-Hexagon bolt with large width across flats and nut assemblies. You may find similar items within these categories by selecting from the choices below:.

If, in addition, the purchaserdeTlre; tc? Flat round washer 6. Metric Heavy Hex Structural Bolts. Position the bolt so that no Corner of the hexagon takes bearing load See Fig.