3/16 Socket Head Cap Screw Dimensions & 3/8-24 Screw | Factory
3/16 Socket Head Cap Screw Dimensions & 3/8 -24 Screw โ Precision-Grade Fasteners Direct from Factory
โ๏ธ Tired of inconsistent threads, wrong head heights, and supply delays? We deliver exact 3/16 socket head cap screw dimensions and 3/8 -24 socket head cap screw dimensions with full traceability, ISO certification, and 30% faster lead times than industry average.
โ Free samples available ยท OEM/ODM welcome ยท Ship to 30+ countries
๐ Table of Contents
โ ๏ธ The Real Cost of Inconsistent Fastener Dimensions
Mismatched Threads
A 0.1mm deviation in the 3/16 socket head cap screw dimensions can cause assembly failure, scrapping $2,000+ in parts per batch.
Delayed Shipments
Suppliers that miss the 3/8 -24 socket head cap screw dimensions tolerance extend lead times by 2โ3 weeks, stalling your production line.
Hidden TCO Increases
Low-cost fasteners that fail torque tests increase total cost of ownership by 37% due to rework and warranty claims.
Compliance Risks
Non-certified fasteners risk CE, RoHS, and UL audits. A single non-compliance can cost โฌ50,000+ in fines in EU markets.
โWe rejected 12% of incoming fasteners last year due to off-spec 3/16 socket head cap screw dimensions. That stops now.โ โ Operations Manager, US Automotive Tier 2 Supplier
๐ Precision Dimensions: 3/16 Socket Head Cap Screw & 3/8 -24 Screw
Every fastener we produce complies with ASME B18.3 / DIN 912 / ISO 4762 standards. Below are the exact specifications you can expect from Boen Fastener.
๐ฉ 3/16 Socket Head Cap Screw Dimensions (ASME B18.3)
| Parameter | Value | Tolerance |
|---|---|---|
| Nominal Thread Size | #10-24 UNC (3/16โณ nominal) | Class 2A/2B |
| Head Diameter (Max) | 0.312โณ (7.92 mm) | ยฑ0.005โณ |
| Head Height (Max) | 0.188โณ (4.78 mm) | ยฑ0.004โณ |
| Hex Socket Size | 5/32โณ (3.97 mm) | ยฑ0.003โณ |
| Thread Length (Min) | 0.625โณ (15.88 mm) | Full thread to head |
| Tensile Strength (Grade 8) | 150,000 psi min | ISO 898-1 |
๐ฉ 3/8 -24 Socket Head Cap Screw Dimensions (ASME B18.3)
| Parameter | Value | Tolerance |
|---|---|---|
| Nominal Thread Size | 3/8โณ-24 UNF | Class 2A/2B |
| Head Diameter (Max) | 0.562โณ (14.27 mm) | ยฑ0.005โณ |
| Head Height (Max) | 0.375โณ (9.53 mm) | ยฑ0.005โณ |
| Hex Socket Size | 5/16โณ (7.94 mm) | ยฑ0.003โณ |
| Thread Length (Min) | 1.000โณ (25.40 mm) | Full thread to head |
| Tensile Strength (Grade 8) | 150,000 psi min | ISO 898-1 |
๐ Note: Both the 3/16 socket head cap screw dimensions and 3/8 -24 socket head cap screw dimensions are available in Alloy Steel (Grade 8), Stainless Steel 304/316, and 12.9 Alloy. Custom lengths and coatings (Zn, HDG, Dacromet) supported.
Automotive
Engine mounts, brake calipers, chassis assemblies
Agricultural Machinery
Harvester arms, tractor linkage points, tiller blades
Construction
Structural steel connections, scaffolding, heavy equipment
Industrial Machinery
Press frames, conveyor systems, robotic arms
๐ Why Boen Fastener Delivers Unbeatable Value
Factory-Direct Pricing
No middlemen. You save 18โ25% vs. distributor pricing on every order of 3/16 socket head cap screw dimensions.
Full Traceability
Material certs (MTR), heat numbers, and dimensional inspection reports provided with every shipment.
30% Faster Lead Times
Standard production: 15โ20 days. Express available in 7 days for urgent orders.
Zero-Defect Policy
100% dimensional inspection per ASME B18.3. <0.2% defect rate โ verified by third-party audits.
Global Logistics
DDP, FOB, CIF options. Warehouses in China, Rotterdam, and Los Angeles for fast regional delivery.
OEM/ODM Expertise
Custom head markings, special coatings, and non-standard lengths for the 3/8 -24 socket head cap screw dimensions.
โ Frequently Asked Questions
Q1: What are the exact 3/16 socket head cap screw dimensions per ASME B18.3?
The 3/16 socket head cap screw dimensions are: thread size #10-24 UNC, head diameter 0.312โณ (7.92 mm) max, head height 0.188โณ (4.78 mm) max, hex socket size 5/32โณ (3.97 mm), and thread length 0.625โณ (15.88 mm) min. Grade 8 tensile strength: 150,000 psi min. Full details in the table above.
Q2: What are the 3/8 -24 socket head cap screw dimensions for UNF threads?
The 3/8 -24 socket head cap screw dimensions are: thread size 3/8โณ-24 UNF, head diameter 0.562โณ (14.27 mm) max, head height 0.375โณ (9.53 mm) max, hex socket size 5/16โณ (7.94 mm), and thread length 1.000โณ (25.40 mm) min. Grade 8 tensile strength: 150,000 psi min.
Q3: Do you offer custom lengths or coatings for these socket head cap screws?
Yes. We support OEM/ODM customizations including non-standard lengths, special head markings, and coatings such as zinc plating, hot-dip galvanizing, Dacromet, and black oxide. Minimum order quantity (MOQ) for custom 3/16 socket head cap screw dimensions is 5,000 pcs; for 3/8 -24 socket head cap screw dimensions, 3,000 pcs.
Q4: What certifications do your fasteners carry?
Our factory is ISO 9001:2015 certified. Products comply with CE, RoHS, and UL standards. We also provide material test reports (MTR) and dimensional inspection certificates for every batch. Specific certifications like FCC, GS, CB, VDE, SAA, HACCP/GMP, and IPPC are available upon request for applicable markets.
Q5: What is your typical lead time and shipping cost to the US or Europe?
Standard production lead time is 15โ20 working days. Express production (7 days) is available for urgent orders. Shipping to the US (CIF) typically takes 25โ30 days by sea; air freight is 5โ7 days. We offer FOB, CIF, and DDP terms. Use our contact form for a customized shipping quote with estimated costs.
Q6: Can I get a sample before placing a bulk order?
Absolutely. We offer free samples for both 3/16 socket head cap screw dimensions and 3/8 -24 socket head cap screw dimensions. You only pay the shipping cost. Samples are dispatched within 2โ3 working days after request.
Q7: How do you ensure the quality of the 3/8 -24 socket head cap screw dimensions?
Every production batch undergoes 100% dimensional inspection using CMM and optical comparators. We also perform tensile testing, hardness testing, and salt spray testing for coatings. A detailed inspection report is included with each shipment. Our defect rate is consistently <0.2%.
Q8: What payment methods do you accept?
We accept T/T (bank transfer), L/C (letter of credit), Western Union, and PayPal for smaller orders. For first-time buyers, a 30% deposit is required with 70% balance before shipment. Long-term contracts can be negotiated with flexible payment terms.
โญ What Our Customers Say
James Whitfield
Procurement Manager, UK Construction Ltd.
โWeโve been sourcing 3/16 socket head cap screw dimensions from Boen for 18 months. Zero dimensional rejects. Their factory-direct pricing saved us 22% compared to our previous distributor. Highly recommend.โ
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Lena Schmidt
Supply Chain Director, German Agri-Tech GmbH
โThe 3/8 -24 socket head cap screw dimensions from Boen are consistently within tolerance. Their communication is excellent โ we get real-time updates on production and shipping. A true partner.โ
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Carlos Mendez
Operations Manager, US Industrial Parts Inc.
โFast delivery, great quality, and the pricing is unbeatable. Weโve consolidated 80% of our fastener purchases with Boen. Their team makes the whole process seamless.โ
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Aisha Patel
Technical Lead, Indian Automotive OEM
โWe needed a reliable supplier for 3/16 socket head cap screw dimensions with strict torque specs. Boen delivered exactly what they promised โ and the inspection reports gave us full confidence.โ
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โ๏ธ About the Author โ Zhang Wei, Senior Technical Director
With over 14 years in industrial fastener engineering and manufacturing at Boen Fastener, Zhang Wei has overseen the production of more than 500 million fasteners for global clients. He specializes in dimensional precision, material science, and supply chain optimization for B2B buyers in the automotive, construction, and machinery sectors. His technical insights have helped clients reduce fastener-related costs by an average of 18โ25%.
๐ Ready to Secure Reliable 3/16 & 3/8 -24 Socket Head Cap Screws?
Get factory-direct pricing, ISO-certified quality, and delivery in 15โ20 days. Free samples available. Risk-free with our 100% satisfaction guarantee.
โณ Limited-time: Free sample shipping for first-time buyers. Offer valid until June 30, 2026.
๐ค Trusted by Global Engineering Leaders
โThe 3/16 socket head cap screw dimensions from Boen are spot-on. We reduced our torque-test failure rate from 4.2% to 0.3%.โ
โ Thomas Mรผller, Procurement Lead, German Automotive Tier 1
โWe switched to Boen for the 3/8 -24 socket head cap screw dimensions. Lead time dropped from 6 weeks to 18 days. ROI was immediate.โ
โ Sarah Chen, Supply Chain Manager, US Industrial Equipment Co.
โConsistent quality and excellent communication. The dimensional reports give us full confidence in every batch.โ
โ David OโBrien, Operations Director, UK Machinery Manufacturer