Product Overview
ASTM A193 Grade B8 Heavy Hex Bolts, 3/4 Inch x 4 Inch, Type 304 Stainless
Condition
Unused new old stock, sold as a lot of eight bolts. Head marking legible on the photographed bolt: B8 and IF. No nuts or washers are included.
Ships from our Idaho warehouse the same or next business day. We've been selling online since 1999.
Product Overview
B8 on the head is the ASTM A193 grade mark for Type 304 stainless bolting, the grade written into many flange and pressure piping specs where corrosion resistance matters more than high strength. These are 3/4 inch diameter, 4 inches long, with a heavy hex head, a plain shank and a threaded end. IF on the head is the maker's mark.
Key Features
- ASTM A193 Grade B8, Type 304 stainless steel
- 3/4 inch diameter, 4 inch length
- Heavy hex head stamped B8 and IF
- Partly threaded, with a plain shank under the head
Applications
- Bolting up a flanged joint on stainless or corrosive-service piping
- Replacing corroded carbon steel bolts on a pump or valve flange in a wet area
- Keeping matched B8 bolts on hand for plant maintenance
Frequently Asked Questions
What grade is this, 304 or 316?
304. B8 is the A193 grade mark for Type 304. Type 316 bolting is stamped B8M.
Are nuts included?
Not included.
What nut goes with a B8 bolt?
A 3/4 inch heavy hex nut to ASTM A194 Grade 8, the nut grade made to pair with A193 B8 bolts. Flat-rate shipping in the lower 48, and orders over the free-shipping line ship free.
B8 and IF on the head say what the bolt is and who made it, which is more than most bolts will tell you. Count the holes in your flange and bolt the joint up in one grade.
