5 8 Unf
Overview
Product sourcing insights & recommendations
The 5/8-18 UNF (Unified National Fine) fastener market is characterized by a specialized demand profile, driven by its 10% higher tensile strength and superior vibration resistance compared to the more common UNC coarse threads AlibabaPtsmake.
Key market insights and product trends include:
- High-Performance Applications: Demand is concentrated in aerospace, automotive (engine/suspension), and precision machinery where high vibration and exact clamping force are critical Alibaba.
- Sourcing Gap: A significant "availability gap" exists in local retail for fine-thread fasteners, leading to a 144% increase in global B2B online demand as buyers seek specialized Grade 8 and stainless steel variants Alibaba.
- Product Specialization: Trending products include Grade 8 yellow zinc bolts for industrial machinery and stainless steel jam nuts for low-profile fittings in plumbing and medical equipment AlibabaAlibaba.
Detailed product listings and technical findings are available in the deliverables below.
Explore market dynamics for 5/8 UNF further with these options:
5 8 18 Unf Threaded Rod 4140 Steel
Products · 3 lists
Custom 18-8 316 L Stainless Steel Threaded Rod 10#-24" 1/4" 5/16" 3/8" 1/2" 5/8" Fully Threaded Bar with Chamfer
Dongguan Changyi Fastener Co., Ltd.🇨🇳CN6 yrs
Customizing Full Thread Rod Stainless Steel 304 316 Plain Finish Ed S Long Screw Stud Bolt UNF Thread Head Class 4 A2-70A4-70
Jiaxing Haina Fastener Co., Limitedverified🇨🇳CN12 yrs
Stainless Steel Fully Threaded Rods M2 to M36 Plain Metric Premium Quality Grade 2/5/8 Class 4.8/8.8/10.9 3-Year Warranty
DEDICATED IMPEX COMPANY🇮🇳IN13 yrs
Metric Threaded Rod 3*1 8*1 Carbon Steel Zinc Plated Left Hand Thread 3-Year Warranty
Shanghai Malaxy Industry Co., Ltd.verified🇨🇳CN5 yrs
Cheapest Price SS304 Thread Rod Full Thread Stud Bolt 3/8 5/16 Threaded Rod
Ningbo Chenglong Special Steel Co., Ltd.🇨🇳CN19 yrs
Customized Length SS304 A4 Thread Rod Full Thread Stud Bolt M3 M4 M5 M6 M8 M10 M12 M16-M42 Threaded Rod
Taizhou Hongchuang Hardware Co., Ltd.🇨🇳CN5 yrs
Hot Dip Galvanized 1/4 3/8 5/16 5/8 UNC UNF ASME B 18.31.2 BSW Thread Rod
SHANDONG DIYAN TRADING LIMITED🇨🇳CN1 yr
6m 8mm M25 M30 Driver 5/16-18 10/32 1000mm 1m 3/8" Both End Thread Rods 8 mm
Shanghai Tengri Metal Products Co., Ltd.verified🇨🇳CN10 yrs
ASMEB18.31.3 35K 45# 1/4 3/4 5/8 7/8 1/2 3/8 Threaded Rods
Shanghai G&T Industry Co., Ltd.verified🇨🇳CN5 yrs
DIN975 Threaded Rod Class 4.6 Zinc
Ningbo Sardis Hardware Products Co., Ltd.verified🇨🇳CN4 yrs
High Quality Grade 4.8 Zinc UNC BSW Steel Thread Rod 1/4 5/16 3/8 7/16 1/2 5/8 Inch Threaded Bar Bag Available 1 2 3 Meters
8mm Bolt Steel Coarse Thread Heavy Duty Threaded Bar Fully All Threaded Rod
Tianjin Zhenxiangyude International Trading Co., Ltd.verified🇨🇳CN5 yrs
High Quality Multi Material High Strength Threaded Rod M2 M4 M6 M8 M10 M12 UNC UNF Thread Long Thread Rod DIN ISO Standard
Zibo Zhenlan Machine And Trade Co., Ltd.🇨🇳CN15 yrs
304/316 Stainless Steel UNC/UNF Fully Threaded Rods Continuous Thread Studs and Imperial Thread Bars 1/4" to 1-1/2"
Huizhou SNIPPIN Hardware Products Co., Ltd.verified🇨🇳CN2 yrs
Astm A193-b7 Carbon Steel Galvanized 1/2" 5/8 3/8 1/4-20 10-32 Fully Threaded Rods Manufacturer in China
Handan Mingqi Fastener Manufacturing Co., Ltd.verified🇨🇳CN5 yrs
M36 M40 Grade 12.9 DIN975 Carbon Steel Thread Rod
Shanghai G&t Industry Co., Ltd.verified🇨🇳CN9 yrs
Din976 Full Rod Stainless Steel Threaded M8 M10 Rods 8mm Bolt 304 and 316 Bolts Din 975 Plain Finish Din975 Thread Stud
Angang Metal Products (shandong) Co., Ltd.verified🇨🇳CN6 yrs
Factory Inch 1/4" 5/16" 3/8" SUS304 316 AISI304 316 ANSI304 316 ASME B8M Thread Rod Full Threaded Bar With Nut DIN975
Dongguan J And R Metalwork Industry Co., Ltd.verified🇨🇳CN9 yrs
Wholesale Steel 3/8" 5/16" Carbon Steel Galvanized Color Yellow Zinc Plated Full Threaded Rods All Studs
Factory Inch 1/4" 5/16" 3/8" SUS304 316 AISI304 316 ANSI304 316 ASME B8M Thread Rod Full Threaded Bar With Nut DIN975
Wenzhou Super Fastener Co., Ltd.🇨🇳CN2 yrs
Inch Size 1/4 3/8 5/16 1/2 Unc Unf Thread Rod ANSI ASTM A193 B7
Nantong Bueno Hardware Co., Ltd.🇨🇳CN9 yrs
Hot Sale Stainless Steel Carbon Steel Alloy Steel Acme Threaded Rod Grade B7 B16 L7 5/8" 12mm 100mm 3m 36" Length for Building
Haiyan Zhisheng Industrial Technology Co., Ltd.🇨🇳CN6 yrs
Grade 2 Galvanized Screw Rod 3/8 1/2 5/8 ASME/ASTM Tooth Rod BS Thread 1 Meter Stud Full Thread UNC Thread Rod
Handan Wangsheng Fastener Co., Ltd.verified🇨🇳CN6 yrs
China OEM Zinc Black Grade 4.8 Steel Threaded Thread Rod bar Studs Machine Parts Supplier
Handan Chentai Fastener Manufacturing Co., Ltd.🇨🇳CN8 yrs
Black Zinc Plated Grade 4.8-12.9 Metric Studs B1=1.25D Double Head Thread Rod M6-M20 OEM for Wood Furniture
ZHIJIA VIETNAM HARDWARE EQUIPMENT COMPANY LIMITED🇻🇳VN3 yrs
High Strength DIN and AISI Threaded Rod / bar - Best Way in Hanging and Connecting
QH PLUS CORPORATION🇻🇳VN13 yrs
4.8 8.8 Grade Carbon Steel Fully Threaded Bar All Thread Rod Metric Sizes for Mechanical Equipment Fixing and Installation
Weifang Tianying Machinery Co., Ltd.verified🇨🇳CN2 yrs
Heibei Tiancong Factory Supply 5/8 Inch UNC Thread Rod 3 M Zinc Plated Steel Carbon Steel Rods
Handan City Tiancong Fastener Manufacturing Co., Ltd.🇨🇳CN8 yrs4.8 8.8 Grade Carbon Steel Fully Threaded Bar All Thread Rod Metric Sizes for Mechanical Equipment Fixing and Installation
Heibei Tiancong Factory Supply 5/8 Inch UNC Thread Rod 3 M Zinc Plated Steel Carbon Steel Rods
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Sources & References
27 sources cited · Verified industry data & reports
5/8 - 18 UNF : Thread Dimensions ...
Machining Doctor
Major Diameter 0.6163 - 0.625. Pitch Diameter 0.5857. Minor Diameter (UNR Only) Variation of 30° angle (+/-) 1.0833°. Minor Diameter 0.5649. D Major Diameter 0 ...
ANSI External Screw Threads Size Tolerances Chart
Engineers Edge
ANSI External Screw Threads Size & Tolerances Chart ; 5/8-11, 3A, 0.6250 ; 5/8-18, 2A, 0.6250 ; 5/8-18, 3A, 0.6250 ; 3/4-10, 2A, 0.7500 ; 3/4-10, 3A, 0.7500 ...
Thread Chart (UNF-UNC) | Major and Minor Diameters
Echo Engineering
THREAD CHART (UNF-UNC THREADS) ; 5/8-18, UNF, 18, 0.625, 0.565 ; 3/4-10, UNC, 10, 0.750, 0.642.
Thread geometry - Unified Fine (UNF)
an-engineering.co.uk
All dimensions in inch unless otherwise stated. d1 – Minor thread diameter male d2 – Minor thread diameter female d3 – Pitch diameter d4 – Major diameter ...
External Thread Dimensions for Unified UNF Screw Threads
Steelmasters
External Thread Dimensions for Unified UNF Screw Threads. Diameter. Threads. Per. Inch. (TPI). Thread. Fit Class. Major Diameter. (“). Pitch Diameter. (“).
UNF Thread ANSI/ASME B1.1
Gewindenormen
UNF Thread ANSI/ASME B1.1 ; 9/16" - 18 UNF, 0.563, 14.288 ; 5/8" - 18 UNF, 0.625, 15.875 ; 3/4" - 16 UNF, 0.750, 19.050 ; 7/8" - 14 UNF, 0.875, 22.225 ...