Heavy Duty Hex Nuts

Heavy duty hex nuts are manufactured by the cold heading and hot forming technologies in nominal diameters ranging from 1/8"- 3" (M3 – M80). We offer fasteners in both USCS/Imperial and metric sizes.

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Product Introduction

Description

We are advanced and comprehensive range of capabilities include engineering, R&D, prototyping, custom manufacturing, precision processing and testing. Our all materials are sourced from the most reputable and exacting foundries in the world. We maintain a multi-million-dollar inventory of fasteners in our product warehouse, which enables us to select, package and expedite your heavy hex nut and heavy hex jam nut order quickly.

We are proud to serve our distributors, EPCs, OEM and MRO customers worldwide.

Our heavy duty hex nuts meet applicable ASTM, ANSI, ASME, SAE, API, NAS, AN, MS, NACE, ISO, DIN, and KS standards.

Our markets include rail transportation, medical equipment, aerospace, ships, semiconductors, oil and gas, pharmaceuticals, petrochemicals & refining, food & beverages,and etc.

Features

1. High-strength design: Heavy Duty Hex Nuts are made from high-strength materials, providing excellent load-bearing capacity and durability.
2. Hexagonal head design: The product features a hexagonal head design, allowing for easy installation and removal using a wrench or socket.
3. Multiple sizes and specifications: Offer a variety of sizes and specifications to accommodate different thread diameters and pitches.
4. Corrosion resistance: The product is typically coated with galvanized or stainless steel coatings, providing excellent corrosion resistance suitable for harsh environments.
5. High clamping force: Provide reliable clamping force, ensuring the stability and safety of threaded connections.
6. Anti-loosening design: The product incorporates anti-loosening features, effectively preventing loosening under vibration environments.
7. High temperature resistance: Have high temperature resistance, making them suitable for high-temperature working environments.
8. Multiple material options: The product offers a variety of material options, such as carbon steel, stainless steel, etc. , to meet different environmental and application requirements.
9. Wide range of applications: Are widely used in industries such as mechanical, construction, aviation, marine, etc. , for bearing heavy loads and connecting threaded components.
10. Compliance with standards: The product complies with international and industry standards, ensuring consistent quality and performance.

Specifications


Dimensions of Heavy Hex Nuts and Heavy Hex Jam Nuts
Nominal Size	Basic Major Diameter of Thread	F			G		H			H₁			Maximum Runout of Bearing Surface to Thread Axis, FIM
		Width Across Flats			Width Across Corners		Thickness Heavy Hex Nuts			Thickness Heavy Hex Jam Nuts			Heavy Hex Nuts		Heavy Hex Jam Nuts
		Width Across Flats			Width Across Corners		Thickness Heavy Hex Nuts			Thickness Heavy Hex Jam Nuts			Specified Proof Load		Heavy Hex Jam Nuts
		Basic	Min.	Max.	Min.	Max.	Basic	Min.	Max.	Basic	Min.	Max.	Up to 150,000 psi	150,000 psi and Greater	All Strength Levels
1/4	0.2500	1/2	0.488	0.500	0.556	0.577	15/64	0.218	0.250	11/64	0.156	0.188	0.017	0.011	0.017
5/16	0.3125	9/16	0.546	0.562	0.622	0.650	19/64	0.280	0.314	13/64	0.186	0.220	0.020	0.012	0.020
3/8	0.3750	11/16	0.669	0.688	0.763	0.794	23/64	0.341	0.377	15/64	0.216	0.252	0.021	0.014	0.021
7/16	0.4375	3/4	0.728	0.750	0.830	0.866	27/64	0.403	0.441	17/64	0.247	0.285	0.022	0.015	0.022
1/2	0.5000	7/8	0.850	0.875	0.969	1.010	31/64	0.464	0.504	19/64	0.277	0.317	0.023	0.016	0.023
9/16	0.5625	15/16	0.909	0.938	1.037	1.083	35/64	0.526	0.568	21/64	0.307	0.349	0.024	0.017	0.024
5/16	0.6250	1-1/16	1.031	1.062	1.175	1.227	39/64	0.587	0.631	23/64	0.337	0.381	0.025	0.018	0.025
3/4	0.7500	1-1/4	1.212	1.250	1.382	1.443	47/64	0.710	0.758	27/64	0.398	0.446	0.027	0.020	0.027
7/8	0.8750	1-7/16	1.394	1.438	1.589	1.660	55/64	0.833	0.885	31/64	0.458	0.510	0.029	0.022	0.029
1	1.0000	1-5/8	1.575	1.625	1.796	1.876	63/64	0.956	1.012	35/64	0.519	0.575	0.031	0.024	0.031
1-1/8	1.1250	1-13/16	1.756	1.812	2.002	2.093	1-7/64	1.079	1.139	39/64	0.579	0.639	0.033	0.027	0.033
1-1/4	1.2500	2	1.938	2.000	2.209	2.309	1-7/32	1.187	1.251	23/32	0.687	0.751	0.035	0.030	0.035
1-3/8	1.3750	2-3/16	2.119	2.188	2.416	2.526	1-11/32	1.310	1.378	25/32	0.747	0.815	0.038	0.033	0.038
1-1/2	1.5000	2-3/8	2.300	2.375	2.622	2.742	1-15/32	1.433	1.505	27/32	0.808	0.880	0.041	0.036	0.041
1-5/8	1.6250	2-9/16	2.481	2.562	2.828	2.959	1-19/32	1.556	1.632	29/32	0.868	0.944	0.044	0.038	0.044
1-3/4	1.7500	2-3/4	2.662	2.750	3.035	3.175	1-23/32	1.679	1.759	31/32	0.929	1.009	0.048	0.041	0.048
1-7/8	1.8750	2-15/16	2.844	2.938	3.242	3.392	1-27/32	1.802	1.886	1-1/32	0.989	1.073	0.051	0.044	0.051
2	2.0000	3-1/8	3.025	3.125	3.449	3.608	1-31/32	1.925	2.013	1-3/32	1.050	1.138	0.055	0.047	0.055
2-1/4	2.2500	3-1/2	3.388	3.500	3.862	4.041	2-13/64	2.155	2.251	1-13/64	1.155	1.251	0.061	0.052	0.061
2-1/2	2.5000	3-7/8	3.750	3.875	4.275	4.474	2-29/64	2.401	2.505	1-29/64	1.401	1.505	0.068	0.058	0.068
2-3/4	2.7500	4-1/4	4.112	4.250	4.688	4.907	2-45/64	2.647	2.759	1-37/64	1.522	1.634	0.074	0.064	0.074
3	3.0000	4-5/8	4.475	4.625	5.102	5.340	2-61/64	2.893	3.013	1-45/64	1.643	1.763	0.081	0.070	0.081
3-1/4	3.2500	5	4.838	5.000	5.515	5.774	3-3/16	3.124	3.252	1-13/16	1.748	1.876	0.087	0.075	0.087
3-1/4	3.5000	5-3/8	5.200	5.375	5.928	6.207	3-7/16	3.370	3.506	1-15/16	1.870	2.006	0.094	0.081	0.094
3-3/4	3.7500	5-3/4	5.562	5.750	6.341	6.640	3-11/16	3.616	3.760	2-1/16	1.990	2.134	0.100	0.087	0.100
4	4.0000	6-1/4	5.925	6.125	6.755	7.073	3-15/16	3.862	4.014	2-3/16	2.112	2.264	0.107	0.093	0.107

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