Steel handling chain Grade 70

hardened steelhigh strength steelheavy-duty

Product Overview
Harbor Freight Grade 70 Chain is a heat‑treated transport/tow/binder chain developed for load securement in transportation. It provides higher working load limits than lower grade chains and is proof tested for transport use. Harbor Freight Grade 70 Chain is NOT approved for overhead lifting. Certificates of proof testing are available on request.

Introduction
Designed specifically for the transportation industry, Harbor Freight Grade 70 Chain typically offers about 20% higher working load limits than High Test or Grade 43 chain. It is also referred to as Transport Chain, System 7, or Spectrum 7 and is widely used for load restraint in agriculture, construction, trucking, industrial and forestry applications.

Parameter (chain size table)
Header: Size | D +/-MM | Inside Length A (MM) | +/-MM | Outside Width B (MM) | +/-MM | Working Load | Test Load (N) | Breaking Load (N) | Weight Per M (KG)
3 | 0.5 | 26 | 1.2 | 12 | 0.6 | 55 | 1050 | 3200 | 0.15
4 | 0.5 | 32 | 1.5 | 16 | 0.8 | 100 | 2000 | 6000 | 0.27
5 | 0.5 | 35 | 1.8 | 20 | 1 | 160 | 3150 | 10000 | 0.43
6 | 0.5 | 42 | 2 | 24 | 1.2 | 224 | 4500 | 14000 | 0.63
7 | 0.5 | 49 | 2.5 | 28 | 1.4 | 300 | 6000 | 18000 | 0.86
8 | 0.5 | 52 | 2.5 | 32 | 1.6 | 400 | 8000 | 25000 | 1.1
9 | 0.5 | 59 | 3 | 36 | 1.8 | 530 | 10500 | 32000 | 1.41
10 | 1 | 65 | 3.2 | 40 | 2 | 630 | 12500 | 40000 | 1.75
11 | 1 | 72 | 3.4 | 44 | 2 | 790 | 15800 | 47500 | 2.11
12 | 1 | 78 | 3.6 | 48 | 2.3 | 940 | 18800 | 56500 | 2.55
13 | 1 | 82 | 4 | 52 | 2.5 | 1000 | 21200 | 63000 | 2.95
16 | 1 | 100 | 5 | 64 | 3.2 | 1600 | 33000 | 100000 | 4.45
18 | 1 | 113 | 5.2 | 70 | 3.2 | 2120 | 42300 | 127000 | 5.65
19 | 1 | 119 | 5.6 | 72 | 3.4 | 2370 | 47300 | 142000 | 6.25
20 | 1 | 120 | 6 | 75 | 3.8 | 2500 | 50000 | 160000 | 7
22 | 1 | 127 | 6 | 82 | 4 | 3170 | 63300 | 190000 | 8.55
25 | 1 | 140 | 6.6 | 88 | 4.2 | 4090 | 81700 | 245000 | 10.9
28 | 1 | 152 | 7 | 96 | 4.7 | 6000 | 120000 | 300000 | 13.9
32 | 1 | 171 | 7.8 | 108 | 5.2 | 8000 | 160000 | 400000 | 18.2

Standards

• Standard: Harbor Freight Grade 70 Chain
• MOQ: 100 Meters
• Package: Carton + Steel Pallet

Specifications

• Product name: Harbor Freight Grade 70 Chain
• Type: Transport / Tow / Binder Chain (Grade 70)
• Material / treatment: Heat treated, high strength chain
• Approvals: NOT approved for overhead lifting
• Proof testing: 100% proof tested; certificates available on request
• Typical applications: agriculture, construction, industrial, trucking and forestry load securement
• Available sizes: from 3 mm up to 32 mm (see parameter table for detailed dimensions, working loads, test and breaking loads, weight per meter)