Color Code: 
Durelloy Threaded Bar is a precision rolled thread onto a heat treated alloy conforming to ASTM A 193-B-7 specifications. Durelloy Threaded Bar is delivered in a Brinell hardness of 280–300 for greater thread strength and wear resistance. The rolled threads guarantee strength and perfect fit for shock-resistant applications subject to high pressure, high temperatures, and repetitive tortional stresses.
| Durelloy B-7 | Durelloy B-16 | Dura-Krome Stainless | |
|---|---|---|---|
| Tensile strength psi minimum | 150,000 | 166,000 | 100,000 |
| Yield point psi minimum | 132,000 | 150,000 | 40,000 |
| Elongation in 2″ | 17% | 18% | 55% |
| Reduction of area | 50% | 55% | 60% |
| Rockwell C hardness | 28/30 | 26/34 | 20 |
| Stock Sizes / Class 2 Fit (B-7) | Stock Sizes / Class 2 Fit (8-16) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | USS (Std.) Th/In. | SAE (Fine) Th/In. | 8Thd. | Dia. | USS (Std.) Th/In. | SAE (Fine) Th/In. | 8Thd. | Dia. | USS (Std.) Th/In. | SAE (Fine) Th/In. | Dia. | USS (Std.) Th/In. | SAE (Fine) Th/In. | 8Thd. |
| 1/4 | 20 | 28 | 1-1/4 | 7 | 12 | 8 | 1/4 | 20 | 28 | 1 | 8 | 14 | 8 | |
| 5/16 | 18 | 24 | 1-3/8 | 6 | 12 | 8 | 5/16 | 18 | 24 | 1-1/8 | 7 | 12 | 8 | |
| 3/8 | 16 | 24 | 1-1/2 | 6 | 12 | 8 | 3/8 | 16 | 24 | 1-1/4 | 7 | 12 | 8 | |
| 7/16 | 14 | 20 | 1-5/8 | 5-1/2 | 12 | 8 | 7/16 | 14 | 20 | 1-3/8 | 6 | 12 | 8 | |
| 1/2 | 13 | 20 | 1-3/4 | 5 | 12 | 8 | 1/2 | 13 | 20 | 1-1/2 | 6 | 12 | 8 | |
| 9/16 | 12 | 18 | 1-7/8 | 5 | 12 | 8 | 5/8 | 11 | 18 | |||||
| 5/8 | 11 | 18 | 2 | 4-1/2 | 12 | 8 | 3/4 | 10 | 16 | |||||
| 3/4 | 10 | 16 | 2-1/4 | 4-1/2 | 8 | 7/8 | 9 | 14 | ||||||
| 7/8 | 9 | 14 | 2-1/2 | 4 | 8 | |||||||||
| 1 | 8 | 14 | 8 | 2-3/4 | 4 | 8 | ||||||||
| 1-1/8 | 7 | 12 | 8 | 3 | 4 | 8 | ||||||||
Lengths: 12′ R/L. Over 3” thru 7” by special order.