Bulk US / Inch Hex Bolts & Hex Flange Bolts – Grade 8, L9, A307, Stainless
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MonsterBULKS Volume pricing • Carton integrity • Fast U.S. shipping • MTR on request Bulk US / Inch Hex Bolts Looking for large-volume, cost-effective US / Inch Hex Bolts for manufacturing or construction? This bulk collection includes Hex Bolts and Hex Flange Bolts , plus a robust L9 (Made in USA) high-strength line. Choose from Grade 8 , Grade A , Grade B , A307 , 18-8 and 316 stainless , with HDG (hot-dip galvanized) and Zinc Yellow finishes. Sizes run from 1/4" up to 2-1/2" diameter to cover everyday jobs through heavy industrial applications. .mb-row{display:flex;flex-wrap:wrap;gap:8px} .mb-chip{display:inline-block;padding:8px 12px;border-radius:10px;text-decoration:none;font-size:14px;border:1px solid #e5e7eb} .mb-chip:hover{opacity:.9} .mb-chip--primary{background:#00429a;color:#fff;border-color:#00429a} .mb-chip--dark{background:#555;color:#fff;border-color:#555} .mb-label{font-weight:700;color:#00429a;margin:10px 0 4px} Head Style Hex Bolts Hex Flange Bolts Material Family Stainless (18-8 / 316) Steel (Grade A/B/8, L9, A307) Quick Sizes 1/4" 5/16" 3/8" 7/16" 1/2" 5/8" 3/4" 7/8" 1" 1-1/8" 1-1/4" 1-1/2" 1-3/4" 2" 2-1/2" At Monster Bolts, we pair competitive bulk pricing with expert support. Need fewer than bulk quantities? Browse standard US Hex Bolt listings . Notes: L9 is a high-strength, Made-in-USA line ideal for critical joints. HDG provides robust corrosion resistance (use correctly sized HDG nuts). Zinc Yellow offers enhanced appearance and moderate corrosion protection. Stainless options include 18-8 (general purpose) and 316 (marine/chemical). All CR+3 zinc, HDG, and plain finishes are RoHS compliant . MTRs available on request. Shipping Note: Bulk shipping times can vary slightly based on inventory location and order size. Most orders ship quickly, but smaller bulk quantities may take a few extra days to process. Related Bulk Collections Bulk Nuts Hex, flange, nyloc • Metric & Inch Bulk Washers Flat, split lock, fender, sealing Bulk Lag Bolts H