7/32 Bolt & 7/8 Bolt 8-32 Bolt 8 Bolt 8 Inch Bolt 8.8 Bolt | Buy
One‑stop source for high‑strength imperial & metric fasteners — factory‑direct pricing,
ISO 9001 · CE · FCC certified
✓ Free samples available · No minimum order quantity for trials
Every procurement manager knows the triple threat: price volatility, quality inconsistency, and supply delays. Here’s what we hear every day:
“We pay 30–40% more for 7/8 bolts from traditional distributors, and MOQs are killing our inventory.”
“8.8 bolts failed torque tests in two batches — we lost a $220k contract because of non‑compliance.”
“6‑week lead times on 8 inch bolts forced us to air‑freight — ate up 22% of our margin.”
“We juggle 5 suppliers for 7/32 bolt, 8-32 bolt, and 8 bolt — no consistency in coating or threads.”
“Cross‑border compliance is a nightmare — CE, FCC, RoHS… paperwork alone costs us 3 days per order.”
“Poor thread engagement on 8-32 bolts caused rework on 12% of assemblies — OEE dropped 8 points.”
You’re not alone. But you can fix it — with a single, certified partner.
From 7/32 bolt to 8.8 bolt, we deliver ISO 898‑1 · SAE J429 · ASTM A325 compliant fasteners with full traceability.
Diameter: 7/32″ (5.56 mm) · UNC/UNF threads. Ideal for light‑duty machinery & panel fastening. Available in zinc, HDG, and stainless.
Stock: 500k+ pcs7/8″ diameter · Grade 5 & 8. Used for structural steel, agricultural equipment, and flanged connections. Proof load tested.
Grade 5 & 8 available#8‑32 UNC (4.17 mm) · Most popular for electronics, brackets, and automotive interiors. 304SS & 316SS options.
RoHS & REACH compliant8 mm diameter (M8) · Class 8.8 / 10.9. Core fastener for construction, conveyor systems, and heavy machinery.
M8x1.25 & M8x1.08″ length · diameters from 1/2″ to 1″. Perfect for timber frames, heavy equipment mounting, and wind tower assembly.
Custom lengths up to 300 mmMetric property class 8.8 (800 MPa tensile). The go‑to for automotive chassis, cranes, and pressure vessels. 100% hardness tested.
M6 – M36 stocked| Bolt Type | Diameter | Thread | Grade / Class | Tensile (MPa) | Coating Options |
|---|---|---|---|---|---|
| 7/32 Bolt | 7/32″ (5.56 mm) | UNC / UNF | Grade 2, 5 | 420 – 740 | Zinc, Nickel, SS |
| 7/8 Bolt | 7/8″ (22.23 mm) | UNC / 8‑thread | Grade 5, 8 | 830 – 1035 | HDG, Black Oxide |
| 8-32 Bolt | #8 (4.17 mm) | 32 TPI UNC | 304, 316 SS | 585 – 800 | Plain, Passivated |
| 8 Bolt (M8) | 8 mm | M8x1.25 / 1.0 | 8.8, 10.9, 12.9 | 800 – 1200 | Zinc Flake, Dacromet |
| 8 Inch Bolt | 1/2″ – 1″ | UNC / UNF | Grade 5, 8, 304 | 620 – 1035 | HDG, Teflon, Xylan |
| 8.8 Bolt | M6 – M36 | Coarse / Fine | Class 8.8 | 800 (min) | Zinc, Geomet, SS |
🔬 All bolts undergo dimensional, hardness, and proof load testing per ASTM F606 / ISO 898‑1.
The 7/32 bolt has a diameter of 7/32″ (5.56 mm) and is typically used in light‑duty assemblies, while the 7/8 bolt is 7/8″ (22.23 mm) and is designed for heavy structural applications. We stock both in multiple grades and coatings.
Yes. We offer custom thread lengths for 8-32 bolt, 7/32 bolt, and all other sizes. Minimum order for custom is 2,000 pcs per SKU. Lead time: 10–15 working days.
8.8 bolt is a metric property class with a minimum tensile strength of 800 MPa. It is widely used in automotive, construction, and general engineering. We stock M6 to M36, with full test certificates.
Absolutely. The 8 inch bolt is available in 304, 316, and duplex stainless steel. We also offer hot‑dip galvanized and zinc‑flake coatings for corrosion resistance in harsh environments.
For standard 8 bolt (M8) class 8.8, our MOQ is 500 pcs per size. For trial orders, we offer sample packs of 50 pcs at cost price. Contact us for details.
Every batch undergoes dimensional inspection, hardness testing (HRC/HV), and proof load testing per ASTM F606 / ISO 898‑1. We provide Material Test Reports and Certificate of Conformance with each shipment.
We ship via sea freight (FOB/CIF), air freight, and express (DHL, FedEx, UPS). For urgent orders, we can deliver 8 inch bolt and 8.8 bolt within 5–7 working days. All shipments include full customs documentation.
Yes. We provide retail blister packs, poly bags with barcode labels, and bulk cartons with your branding. Custom packaging MOQ: 5,000 pcs per size. Ask for our packaging design guide.

★★★★★ “We source 7/8 bolt and 8.8 bolt for agricultural machinery. Boen’s quality is consistently better than our previous supplier — 40% fewer rejects. Their team also helped us with HS code classification. Highly recommend.”

★★★★★ “The 8-32 bolt and 7/32 bolt samples arrived in 6 days. Certification documents were spot‑on — CE, RoHS, and ISO. We placed a 50k order immediately. Excellent communication.”

★★★★★ “We needed 8 inch bolt and 8 bolt for a high‑rise project. Boen delivered 2 weeks ahead of schedule. The HDG coating was uniform and passed the salt spray test. Will order again.”

★★★★★ “We switched to Boen for 8.8 bolt and 7/8 bolt. Total cost of ownership dropped 27% — better pricing, lower freight consolidation, and zero quality issues. Their after‑sales support is world‑class.”

✍️ David Chen — Senior Fastener Engineer & Export Specialist
David has 15+ years of experience in fastener manufacturing and international trade. He leads Boen’s technical team, overseeing quality control and product development for global clients. David regularly speaks at industry events on topics like supply chain optimization and fastener standards. “I personally verify every batch of 8.8 bolt and 7/8 bolt before it leaves our factory.”
Get your free sample pack + quote within 24 hours
Or email: shuan@fastenboen.com · mary@fastenboen.com · grace@fastenboen.com · stella@fastenboen.com
📍 Hanguang Industrial Park, Yongnian District, Handan, Hebei, China · Mon–Sat 09:00–17:00
🏭 Trusted by Industry Leaders Worldwide
★★★★★ “We switched to Boen for 7/8 bolt and 8.8 bolt. Lead time dropped from 5 weeks to 12 days. Cost savings of 31% on our first order.”
— Marco V., Procurement Manager, Italy
★★★★★ “The 8-32 bolt and 7/32 bolt samples passed our torque tests perfectly. Zero defects in 50k pcs — our QA team was impressed.”
— Sarah L., Manufacturing Engineer, USA
★★★★★ “8 inch bolts in HDG — exactly as specified. Boen handled the certification docs (CE, ISO) flawlessly. Saved us weeks of admin.”
— Dmitry K., Supply Chain Director, UAE