Zinc Steel Hex Head Lag Screw for Wood Plasitc ASME B18.2.1 Fastener
Zinc Steel Hex Head Lag Screw for Wood Plasitc ASME B18.2.1 Fastener
We provide assorted specifications hex lag screws from M4 to M10 based on DIN 571 standard , and ASME B18.2.1 as well for wide requests in various fields .
Hex head lag bolt with coarse threads and sharp point , it is applied to securing heavy wooden part to another part or concrete or masonry part . property class from 4.8 to 8.8 .
Specific Specifications for Lag Screws 
DIN 571
| d | 4 | 5 | 6 | 7 | 8 | 10 |
| H | 3 | 3.5 | 4.0 | 5.0 | 5.5 | 7.0 |
| ds | 4 | 5 | 6 | 7 | 8 | 10 |
| 3.52 | 4.52 | 5.52 | 6.42 | 7.42 | 9.42 | |
| s | 7 | 8 | 10 | 12 | 13 | 17 |
ASME B18.2.1
| d | k | ds (max) | s | P |
| NO.10 | 1/8 | 0.199 | 9/32 | 0.091 |
| 1/4 | 11/64 | 0.260 | 3/8 | 0.01 |
| 5/16 | 13/64 | 0.324 | 1/2 | 0.111 |
| 3/8 | 1/4 | 0.388 | 9/16 | 0.143 |
| 7/16 | 19/64 | 0.452 | 5/8 | 0.143 |
| 1/2 | 21/64 | 0.515 | 3/4 | 0.167 |
| 5/8 | 27/64 | 0.642 | 15/16 | 0.200 |
| 3/4 | 1/2 | 0.768 | 1-1/8 | 0.222 |
| 7/8 | 19/32 | 0.895 | 1-5/16 | 0.250 |
| 1 | 21/32 | 1.022 | 1-1/2 | 0.286 |
| 1-1/8 | 3/4 | 1.149 | 1-11/16 | 0.308 |
| 1-1/4 | 27/32 | 1.277 | 1-7/8 | 0.308 |
Materials for Lag Screws
Stainless steel : SUS 201 , SUS303 , SUS 304 ,SUS 316 , SUS 416 ,SUS 430 and SUS 420
Carbon steel : 1008 , 1010 , 1018 , 1022 , 1035 , 1045 , SCM 435 and 40CRO
Aluminum : 2024 , 6061 and 7075
Brass : CuZn35 , CuZn37 , CuZn40 , CuZn37Pb1 and CuZn39Pb1
Finishing for Lag Screws
Zinc
The most popular plating for the most products , making parts are bright and smooth and resistant corrosion
Nickel
The film thickness is 1～3μm , it improves brightness and wear resistance . it is for the most items .
Polishing
Reduce roughness of parts and improve brightness . is workable for the most metal parts in industry .
Tin finish
With film thickness 0.13～1.27μm , tin finish with bright surface and good ductility ,corrosion resistance ,lower melting point ,eco-friendly features . and is used for electronics .
Brass finish
Usually, 5gm～8gm finish coating thickness and with good dispensability ,Bright appearance .
Dacromet
This finish is grey color with High corrosion resistance , No hydrogen embrittlement ,Heat resistance ,Easy to plated more ,eco-friendly etc .
Chrome
Chrome finish is silver white color and the thickness of film is 0．25～0．5μm normally . chrome finish has many practical Features like Bright appearance ,Wear resistance ,Corrosion resistance ,Hard plating film ,Heat resistance .
Applications for Lag Screws
Lag screws are used for heavy wooden parts like beam ,wooden block .
Features for lag screws
◆ Wider threads
◆ Fast cutting performance
◆ Harden material
◆ Perfect security
◆ Eco-friendly
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.