HB 8383-2013 GH4738 MJ thread 12 point self-locking nut

Name: Steel High-Torque 12-Point Flange Nuts

Size: M6, M8, M10, M12, M16, M20, M22, M24, M27, M30, M33, M36, M39, M42, M45

Material: 30CrMnsi, 40CrNiMoA, 40Cr2MoV, CH2132

Surface treatment: environmental protection color zinc, environmental protection blue zinc, zinc-nickel alloy, dacromet, black zinc, yellow zinc

Thread tolerance:

1. Tin-plated nut thread tolerance is 5G (before plating);

2. The thread tolerance of silver-plated nuts is 5H (before plating).

3. The surface roughness parameter Ra value of the thread side before plating is 3.2 Km

Factory inspection of nuts:

1. Nuts should be subjected to a durable locking performance test, and 5 pieces are drawn for each batch. If one piece is unqualified, the batch of products will be rejected.

2. 100% magnetic particle flaw detection or fluorescent flaw detection should be carried out before plating at the end of the nut or according to the agreement.

3. The appearance of the nuts should be 100% inspected.

4. Nut dimensions, mechanical properties, threads, acceptance inspection of shape and position tolerances, other acceptance inspections, and packaging shall be in accordance with the provisions of GB/T 90.

Size Can also be According to the Customer's requirement please check the detailed specification sheet details PDF, CAD, 147-148Page See more product details.

Packing: Inner is Poly foam, out is carton. Then pallet. Carton size: 29*19*19.5CM and 23.5*17.5*8, CM and pallet size is: 215*100*90CM, or as your requirement.