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{"title":"Precision ISO 8675 Carbon Steel & 304 Stainless Steel Fine Thread Jam Nuts","imgUrl":"https:\/\/img.chinax.com\/nimg\/0b\/a3\/67187d710b197ceb4b3be88cd95d-200x200-1\/precision_iso_8675_carbon_steel_26_304_stainless_steel_fine_thread_jam_nuts.jpg","attrs":{"Certification":"ISO9001,IATF16949","Application":"Mechanical fastening","Model Number":"ISO8675","Connection":"Common Bolt"}}
{"title":"Zinc Plated Carbon Steel ISO 8675 Fine Pitch Thin Hex Nuts","imgUrl":"https:\/\/img.chinax.com\/nimg\/04\/46\/41629d3b83f25658f5d4a4574c5b-200x200-1\/zinc_plated_carbon_steel_iso_8675_fine_pitch_thin_hex_nuts.jpg","attrs":{"Thread Type":"Metric Fine Thread \/ Fine Pitch","Certification":"ISO9001,IATF16949","Surface Finish":"Zinc Plated","Model Number":"ISO8752"}}
{"title":"Customized Hex Head Nut 0.5 Inch Hexagon Nut With Flange","imgUrl":"https:\/\/img.chinax.com\/nimg\/13\/b7\/c899ad13fd7017596e2b0c09de90-200x200-1\/customized_hex_head_nut_0_5_inch_hexagon_nut_with_flange.jpg","attrs":{"Brand Name":"YB","Model Number":"Hex Nut","Place Of Origin":"ZheJiang China","Certification":"ISO90001"}}
ISO 8675 (GB 6173) Fine Thread Thin Hexagon Nuts in 304 SS
Product Overview
ISO 8675 (GB/T 6173) Fine Pitch Thin Hexagon Nuts, commonly referred to as low-profile hex jam nuts or fine thread thin nuts, are precision-threaded mechanical fasteners engineered for space-restricted assemblies or secondary locking applications.
Unlike standard coarse thread nuts, the metric fine thread pitch provides a smaller helix angle and greater friction engagement per axial millimeter. This design allows for superior precision in axial adjustment, resistance to vibration loosening, and structural stability in compact machinery.
Material & Finish Options
Zinc Plated Carbon Steel (Cr3+ Blue/White Zinc)
Manufactured from Class 04/05 structural carbon steel and finished with eco-friendly trivalent zinc plating. Offers excellent tensile load capacity and reliable rust protection for indoor machinery and industrial equipment.
304 Stainless Steel (Plain / Passivated)
Crafted from A2-70 grade austenitic stainless steel with a natural clean finish. Delivers high resistance to corrosion, oxidation, and chemicals, making it ideal for marine, outdoor, chemical, and food processing applications.
Key Features & Benefits
Space-Saving Low Profile: Height is approximately half of a standard hex nut (h ≈ 0.5d), ideal for tight clearance spaces and valve stem lockings.
Enhanced Fine Thread Precision: Smaller pitch allows precise torque calibration and micrometer-level axial positioning.
Double Chamfered Design: Manufactured with Type B chamfered edges on both sides for easy wrench engagement and assembly aesthetic.
Technical Specifications
Thread Size
M3
M4
M5
M6
M8
M10
M12
M14
da max
3.45
4.6
5.75
6.75
8.75
10.8
13
15.1
da min
3
4
5
6
8
10
12
14
dw min
4.6
5.9
6.9
8.9
11.6
14.6
16.6
19.6
e min
6.01
7.66
8.79
11.05
14.28
17.77
20.03
23.35
m max
1.8
2.2
2.7
3.2
4
5
6
7
m min
1.55
1.95
2.45
2.9
3.7
4.7
5.7
6.42
mw min
1.24
1.56
1.96
2.32
2.96
3.76
4.56
5.1
s max
5.5
7
8
10
13
16
18
21
s min
5.32
6.78
7.78
9.78
12.73
15.73
17.73
20.67
Industrial Applications
Hydraulics & Pneumatics: Cylinder rod end locks, hydraulic hose fittings, and control valve mounts.
Automotive Powertrain: Sensor brackets, shift linkage positioning, and steering rod lock nuts.
Precision Instruments: Fine axial adjustment stops, optical positioning mounts, and calibrated spindles.
Industrial Machinery: Limit switch brackets, compact linear actuator mounts, and motor housings.
Frequently Asked Questions
What is the difference between ISO 8675 and ISO 4035?
Both are metric thin hex nuts, but ISO 8675 specifies Metric Fine Pitch Thread, whereas ISO 4035 specifies Standard Coarse Pitch Thread.
How is an ISO 8675 thin nut used as a jam nut?
In jam nut configurations, the thin nut is threaded first and torqued against the bearing surface, followed by a standard thickness nut. Tightening the standard nut against the thin nut locks both in place via axial tension.
Can you manufacture non-standard fine pitches or custom materials?
Yes, we support custom pitches (e.g., M10×0.75, M18×1.0) and materials including 316 Stainless Steel, Brass, and Alloy Steel.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Trading Company
Year Established:
2012
Total Annual:
5000000-6000000
Employee Number:
45~53
Ecer Certification：
Verified Supplier
Ningbo Yongbiao Fastener Manufacturing Co., Ltd. is located in Ningbo, the second largest port city in China. The factory is 50 kilometers away from Ningbo Port and can reach the sea freight warehouse in one hour, with very fast logistics. The company was founded in 2012 and after years of hard work... Ningbo Yongbiao Fastener Manufacturing Co., Ltd. is located in Ningbo, the second largest port city in China. The factory is 50 kilometers away from Ningbo Port and can reach the sea freight warehouse in one hour, with very fast logistics. The company was founded in 2012 and after years of hard work...
