16mm Socket Head Cap Screw Dimensions & 2-56 Socket Head | Maker
Stop overpaying for inconsistent fasteners. Get factory-direct pricing, ISO 9001-certified quality, and 15-day global delivery on M16 & #2-56 socket head cap screws โ trusted by 30+ countries since 2010.
โ ISO 9001 ยท โ CE ยท โ RoHS ยท โ Factory-Direct ยท โ OEM/ODM
Every procurement manager knows the struggle: you need 16mm socket head cap screw dimensions that match your assembly jigs, or 2-56 socket head cap screw dimensions for your precision instruments โ but the parts you receive don't fit. Here's what that costs you:
Poor tolerances cause rework and scrap. A 0.2mm deviation in head height can ruin an entire batch of assemblies โ costing $2,000+ per hour in downtime.
One batch of 16mm socket head cap screw dimensions is fine, the next is off by 0.1mm. Your QA team spends hours inspecting instead of approving.
Importing from distant suppliers means 45-60 day lead times and freight costs that eat 15-20% of your P&L. Air freight is faster but kills margins.
60% of B2B buyers report receiving fasteners that don't match 2-56 socket head cap screw dimensions specs from low-cost suppliers. Compliance failures = lost contracts.
๐ You need a supplier that delivers exact dimensions, every time โ at a price that makes sense.
At Handan Boen Fastener Manufacturing Co., Ltd., we produce M16 (16mm) and #2-56 socket head cap screws to strict ISO 9001 standards. Our factory-direct model eliminates middlemen, so you get certified quality + competitive pricing + fast delivery.
| Specification | 16mm Socket Head Cap Screw (M16) | 2-56 Socket Head Cap Screw (#2-56) |
|---|---|---|
| Thread Size | M16 x 2.0 (coarse) / M16 x 1.5 (fine) | #2-56 UNC (2.184 mm major diameter) |
| Head Diameter (max) | 24.00 mm (0.945 in) | 4.37 mm (0.172 in) |
| Head Height (max) | 16.00 mm (0.630 in) | 2.18 mm (0.086 in) |
| Hex Socket Size | 8 mm (0.315 in) hex | 0.050 in (1.27 mm) hex |
| Thread Pitch | 2.0 mm (coarse) / 1.5 mm (fine) | 56 TPI (0.453 mm pitch) |
| Tensile Strength (Grade 12.9) | 1,220 MPa (min) | 1,220 MPa (min) |
* All dimensions conform to ISO 4762 / DIN 912 / ASME B18.3. Custom lengths and coatings available.
10+ years of export expertise, 30+ countries served. You get 15-30% cost savings vs. intermediaries.
ISO 9001, CE, RoHS certified. 100% dimensional inspection on every batch of 16mm socket head cap screw dimensions and 2-56 socket head cap screw dimensions.
Standard lead time: 15-25 days. Express option: 7-10 days to USA/EU ports. Real-time tracking included.
M16 socket head cap screws used in tractor linkage assemblies โ high vibration resistance required.
#2-56 socket head cap screws for PCB mounting, medical devices, and optical equipment.
High-strength M16 fasteners for steel frame connections and heavy equipment anchoring.
Both M16 and #2-56 grades used in engine components, chassis, and electronic control units.






"We switched to Boen for our M16 socket head cap screws. The 16mm socket head cap screw dimensions are spot-on every time โ 0% reject rate across 3 batches. Their pricing saved us 22% annually."

"The 2-56 socket head cap screw dimensions from Boen are the most consistent we've sourced. Our optical assembly line runs 18% faster with zero jamming. Excellent engineering support."
For an M16 socket head cap screw, the key dimensions are: thread diameter 16mm, thread pitch 2.0mm (coarse) or 1.5mm (fine), head diameter 24mm max, head height 16mm max, hex socket size 8mm. We recommend specifying grade (e.g., 12.9) and material (alloy steel, stainless steel). We provide free dimensional reports with every shipment.
A #2-56 socket head cap screw has a major thread diameter of 2.184mm, thread pitch of 56 TPI (0.453mm), head diameter of 4.37mm max, head height of 2.18mm max, and hex socket size of 0.050 inches (1.27mm). We stock both plain and black oxide finish in 304/316 stainless and alloy steel.
Absolutely. As an OEM/ODM manufacturer, we offer custom lengths from 6mm to 200mm for M16, and from 3mm to 50mm for #2-56. Coatings include zinc plating, hot-dip galvanizing, Dacromet, black oxide, and PTFE. Minimum order quantity is typically 5,000 pieces for custom specs.
Our products meet ISO 4762, DIN 912, ASME B18.3, and ANSI standards. We hold ISO 9001:2015, CE, RoHS, and FCC certifications. For export to the US and EU, we provide certificates of compliance, material test reports (MTR), and dimension inspection reports with every order.
Standard lead time is 15-25 working days from order confirmation. Express production (7-10 days) is available for urgent orders. Sea freight to US West Coast or EU ports costs approximately $150-$350 per cubic meter depending on volume. We offer FOB, CIF, and DDP incoterms.
Yes, we provide free samples (up to 10 pieces) for standard sizes including M16 and #2-56. You only pay the shipping cost. We also offer sample kits with dimensional reports so you can verify 16mm socket head cap screw dimensions and 2-56 socket head cap screw dimensions before bulk ordering.
We accept T/T (bank transfer), L/C (letter of credit), PayPal, and Western Union for international orders. For first-time customers, we typically require 30% deposit with 70% balance against copy of shipping documents. Long-term partners can negotiate net 30 or net 60 terms.
We implement a 3-stage quality control system: (1) Incoming material inspection with chemical analysis, (2) In-process dimensional checks using optical comparators and CMM, (3) Final inspection with 100% thread gauge and hardness testing. Every batch is traceable with a unique heat number.

"We've been sourcing M16 socket head cap screws from Boen for 2 years. The 16mm socket head cap screw dimensions are always within spec. Their quality control is world-class โ we've had zero rejections."

"The 2-56 socket head cap screw dimensions from Boen are the most precise we've found in Asia. Fast delivery, great communication, and 15% cost savings compared to our previous supplier."

"Boen's factory-direct model cut our fastener costs by 28%. Their team helped us optimize the 16mm socket head cap screw dimensions for our specific application. Highly recommend."

James Chen โ Senior Technical Director at Handan Boen Fastener Manufacturing Co., Ltd. With 15+ years in fastener engineering and export, James has helped 200+ B2B clients across 30 countries optimize their fastener specifications, reduce costs, and improve supply chain reliability. He specializes in socket head cap screw dimensions, material selection, and quality assurance systems.
Limited-time offer: Free sample kit + dimensional report for first-time buyers. Order before [date] and get 5% discount on your first bulk order.
๐ Call: +86 156 3007 2814 ย |ย โ๏ธ Email: shuan@fastenboen.com ย |ย ๐ www.fastenboen.com
โ Risk-free: Free samples available | โ Money-back guarantee on quality | โ ISO 9001 certified