Metric To Metric Male Hex Thread Adapters

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129 Products

Metric-to-Metric Male Hex Thread Adapters

Twist these adapters onto female metric threads to change pitch or switch thread sizes. They can also be used as standoffs to make space between parts. Tighten or loosen with a wrench.

Adapters that meet ASTM specifications are made from or plated with materials that adhere to specific standards for chemical and physical properties, such as hardness.

Black oxide steel adapters have a black finish that won’t chip or rub off. They will not rust in dry or indoor environments, but will corrode if used outdoors.

Zinc-plated steel adapters should be used in mostly dry environments. The zinc plating offers temporary rust protection, but once it wears away the steel will rust.

At one third the weight of steel, aluminum adapters are the lightest option. They will not rust in damp or humid environments, but they will corrode if left in water.

18-8 stainless steel adapters can be used in wet environments, but chemicals or salt water will cause staining and rust spots.

For areas exposed to salt water or chemicals, 316 stainless steel adapters are the best choice. Only harsh chemicals, such as hydrochloric acid, will cause them to corrode.

Thread Size				Thread Lg.		Thread Fit		Hex
(A)	Pitch (A), mm	(B)	Pitch (B), mm	(A), mm	(B), mm	(A)	(B)	Size, mm	Lg., mm	Tensile Strength, psi	Hardness	Specifications Met		Each
Black-Oxide Steel
M2.5	0.45	M3	0.5	4	4.8	Class 6g	Class 6g	4.5	6.35	75,000	Rockwell B65	ASTM A108	000000000	00000
M2.5	0.45	M4	0.7	4	9.5	Class 6g	Class 6g	6	6.35	75,000	Rockwell B65	ASTM A108	000000000	0000
M3	0.5	M3.5	0.6	4.8	6.4	Class 6g	Class 6g	6	6.35	75,000	Rockwell B65	ASTM A108	000000000	0000
M3	0.5	M4	0.7	4.8	9.5	Class 6g	Class 6g	6	6.35	75,000	Rockwell B65	ASTM A108	000000000	0000
M3	0.5	M5	0.8	4.8	9.5	Class 6g	Class 6g	10	6.35	75,000	Rockwell B65	ASTM A108	000000000	0000
M3.5	0.6	M4	0.7	6.4	9.5	Class 6g	Class 6g	6	6.35	75,000	Rockwell B65	ASTM A108	000000000	0000
M4	0.7	M5	0.8	9.5	9.5	Class 6g	Class 6g	10	6.35	75,000	Rockwell B65	ASTM A108	000000000	0000
M4	0.7	M6	1	9.5	12.7	Class 6g	Class 6g	13	6.35	75,000	Rockwell B65	ASTM A108	000000000	00000
M4	0.7	M8	1.25	9.5	12.7	Class 6g	Class 6g	13	6.35	75,000	Rockwell B65	ASTM A108	000000000	00000
M5	0.8	M6	1	9.5	12.7	Class 6g	Class 6g	13	6.35	75,000	Rockwell B65	ASTM A108	000000000	00000
M5	0.8	M8	1.25	9.5	12.7	Class 6g	Class 6g	13	6.35	75,000	Rockwell B65	ASTM A108	000000000	00000
M6	1	M8	1.25	12.7	12.7	Class 6g	Class 6g	13	6.35	75,000	Rockwell B65	ASTM A108	000000000	00000
Zinc-Plated Steel
M2.5	0.45	M3	0.5	4	4.8	Class 6g	Class 6g	4.5	6.35	75,000	Rockwell B65	ASTM A108, ASTM B633	000000000	0000
M2.5	0.45	M3.5	0.6	4	6.4	Class 6g	Class 6g	6	6.35	75,000	Rockwell B65	ASTM A108, ASTM B633	000000000	0000
M2.5	0.45	M4	0.7	4	9.5	Class 6g	Class 6g	6	6.35	75,000	Rockwell B65	ASTM A108, ASTM B633	000000000	0000
M3	0.5	M3.5	0.6	4.8	6.4	Class 6g	Class 6g	6	6.35	75,000	Rockwell B65	ASTM A108, ASTM B633	000000000	0000
M3	0.5	M4	0.7	4.8	9.5	Class 6g	Class 6g	6	6.35	75,000	Rockwell B65	ASTM A108, ASTM B633	000000000	0000
M3	0.5	M5	0.8	4.8	9.5	Class 6g	Class 6g	10	6.35	75,000	Rockwell B65	ASTM A108, ASTM B633	000000000	0000
M3.5	0.6	M4	0.7	6.4	9.5	Class 6g	Class 6g	6	6.35	75,000	Rockwell B65	ASTM A108, ASTM B633	000000000	0000
M3.5	0.6	M6	1	6.4	12.7	Class 6g	Class 6g	13	6.35	75,000	Rockwell B65	ASTM A108, ASTM B633	000000000	00000
M3.5	0.6	M8	1.25	6.4	12.7	Class 6g	Class 6g	13	6.35	75,000	Rockwell B65	ASTM A108, ASTM B633	000000000	00000
M4	0.7	M5	0.8	9.5	9.5	Class 6g	Class 6g	10	6.35	75,000	Rockwell B65	ASTM A108, ASTM B633	000000000	0000
M4	0.7	M6	1	9.5	12.7	Class 6g	Class 6g	13	6.35	75,000	Rockwell B65	ASTM A108, ASTM B633	000000000	00000
M4	0.7	M8	1.25	9.5	12.7	Class 6g	Class 6g	13	6.35	75,000	Rockwell B65	ASTM A108, ASTM B633	000000000	00000
M5	0.8	M6	1	9.5	12.7	Class 6g	Class 6g	13	6.35	75,000	Rockwell B65	ASTM A108, ASTM B633	000000000	00000
M5	0.8	M8	1.25	9.5	12.7	Class 6g	Class 6g	13	6.35	75,000	Rockwell B65	ASTM A108, ASTM B633	000000000	00000
M6	1	M8	1.25	12.7	12.7	Class 6g	Class 6g	13	6.35	75,000	Rockwell B65	ASTM A108, ASTM B633	000000000	00000
Aluminum
M2.5	0.45	M3	0.5	4	4.8	Class 6g	Class 6g	4.5	6.35	45,000	Rockwell B56	__	000000000	0000
M2.5	0.45	M3.5	0.6	4	6.4	Class 6g	Class 6g	6	6.35	45,000	Rockwell B56	__	000000000	0000
M2.5	0.45	M4	0.7	4	9.5	Class 6g	Class 6g	6	6.35	45,000	Rockwell B56	__	000000000	0000
M3	0.5	M3.5	0.6	4.8	6.4	Class 6g	Class 6g	6	6.35	45,000	Rockwell B56	__	000000000	0000
M3	0.5	M4	0.7	4.8	9.5	Class 6g	Class 6g	6	6.35	45,000	Rockwell B56	__	000000000	0000
M3	0.5	M5	0.8	4.8	9.5	Class 6g	Class 6g	10	6.35	45,000	Rockwell B56	__	000000000	0000
M3.5	0.6	M4	0.7	6.4	9.5	Class 6g	Class 6g	6	6.35	45,000	Rockwell B56	__	000000000	0000
M4	0.7	M5	0.8	9.5	9.5	Class 6g	Class 6g	10	6.35	45,000	Rockwell B56	__	000000000	0000
M4	0.7	M6	1	9.5	12.7	Class 6g	Class 6g	13	6.35	45,000	Rockwell B56	__	000000000	0000
M4	0.7	M8	1.25	9.5	12.7	Class 6g	Class 6g	13	6.35	45,000	Rockwell B56	__	000000000	0000
M5	0.8	M6	1	9.5	12.7	Class 6g	Class 6g	13	6.35	45,000	Rockwell B56	__	000000000	0000
M5	0.8	M8	1.25	9.5	12.7	Class 6g	Class 6g	13	6.35	45,000	Rockwell B56	__	000000000	0000
M6	1	M8	1	12.7	12.7	Class 6g	Class 6g	12.7	4.8	45,000	Rockwell B56	ASTM B211	000000000	0000
M6	1	M8	1.25	12.7	12.7	Class 6g	Class 6g	13	6.35	45,000	Rockwell B56	__	000000000	0000
M8	1	M8	1.25	12.7	12.7	Class 6g	Class 6g	12.7	4.8	45,000	Rockwell B56	ASTM B211	000000000	0000
M8	1	M10	1.25	12.7	16	Class 6g	Class 6g	17.4	6.4	45,000	Rockwell B56	ASTM B211	000000000	00000
M8	1	M10	1.5	12.7	16	Class 6g	Class 6g	17.4	6.4	45,000	Rockwell B56	ASTM B211	000000000	00000
M8	1.25	M10	1	12.7	16	Class 6g	Class 6g	17.4	6.4	45,000	Rockwell B56	ASTM B211	000000000	00000
M8	1.25	M10	1.5	12.7	16	Class 6g	Class 6g	17.4	6.4	45,000	Rockwell B56	ASTM B211	000000000	00000
M10	1	M10	1.25	16	16	Class 6g	Class 6g	17.4	6.4	45,000	Rockwell B56	ASTM B211	000000000	00000
M10	1	M10	1.5	16	16	Class 6g	Class 6g	17.4	6.4	45,000	Rockwell B56	ASTM B211	000000000	00000
M10	1	M12	1.75	19	19	Class 6g	Class 6g	19	9.5	45,000	Rockwell B56	ASTM B211	000000000	00000
M10	1.25	M12	1.25	16	19	Class 6g	Class 6g	19	9.5	45,000	Rockwell B56	ASTM B211	000000000	00000
M10	1.25	M12	1.5	19	19	Class 6g	Class 6g	19	9.5	45,000	Rockwell B56	ASTM B211	000000000	00000
M10	1.25	M12	1.75	19	19	Class 6g	Class 6g	19	9.5	45,000	Rockwell B56	ASTM B211	000000000	00000
M10	1.5	M12	1.25	16	19	Class 6g	Class 6g	19	9.5	45,000	Rockwell B56	ASTM B211	000000000	00000
M10	1.5	M12	1.5	16	19	Class 6g	Class 6g	19	9.5	45,000	Rockwell B56	ASTM B211	000000000	00000
M10	1.5	M12	1.75	19	19	Class 6g	Class 6g	19	9.5	45,000	Rockwell B56	ASTM B211	000000000	00000
M12	1.25	M12	1.5	19	19	Class 6g	Class 6g	19	9.5	45,000	Rockwell B56	ASTM B211	000000000	00000
M12	1.25	M12	1.75	19	19	Class 6g	Class 6g	19	9.5	45,000	Rockwell B56	ASTM B211	000000000	00000
18-8 Stainless Steel
M2.5	0.45	M3	0.35	7.5	7.5	Class 6g	Class 6g	6.4	3.2	85,000	Rockwell B80	ASTM A582	000000000	0000
M2.5	0.45	M3	0.5	4	4.8	Class 6g	Class 6g	4.5	6.35	85,000	Rockwell B80	ASTM A582	000000000	0000
M2.5	0.45	M3.5	0.6	4	6.4	Class 6g	Class 6g	6	6.35	85,000	Rockwell B80	ASTM A582	000000000	0000
M2.5	0.45	M4	0.7	4	9.5	Class 6g	Class 6g	6	6.35	85,000	Rockwell B80	ASTM A582	000000000	0000
M3	0.35	M3	0.5	7.5	7.5	Class 6g	Class 6g	6.4	3.2	85,000	Rockwell B80	ASTM A582	000000000	0000
M3	0.35	M4	0.7	7.5	9.5	Class 6g	Class 6g	6.4	3.2	85,000	Rockwell B80	ASTM A582	000000000	0000
M3	0.5	M3.5	0.6	4.8	6.4	Class 6g	Class 6g	6	6.35	85,000	Rockwell B80	ASTM A582	000000000	0000
M3	0.5	M4	0.5	7.5	9.5	Class 6g	Class 6g	6.4	3.2	85,000	Rockwell B80	ASTM A582	000000000	0000
M3	0.5	M4	0.7	4.8	9.5	Class 6g	Class 6g	6	6.35	85,000	Rockwell B80	ASTM A582	000000000	0000
M3	0.5	M5	0.8	4.8	9.5	Class 6g	Class 6g	10	6.35	85,000	Rockwell B80	ASTM A582	000000000	0000
M3.5	0.6	M4	0.7	6.4	9.5	Class 6g	Class 6g	6	6.35	85,000	Rockwell B80	ASTM A582	000000000	0000
M3.5	0.6	M5	0.5	9.5	7.5	Class 6g	Class 6g	7.9	3.2	85,000	Rockwell B80	ASTM A582	000000000	0000
M3.5	0.6	M5	0.8	6.4	9.5	Class 6g	Class 6g	10	6.35	85,000	Rockwell B80	ASTM A582	000000000	0000
M3.5	0.6	M6	1	6.4	12.7	Class 6g	Class 6g	13	6.35	85,000	Rockwell B80	ASTM A582	000000000	0000
M3.5	0.6	M8	1.25	6.4	12.7	Class 6g	Class 6g	13	6.35	85,000	Rockwell B80	ASTM A582	000000000	0000
M4	0.5	M4	0.7	9.5	9.5	Class 6g	Class 6g	6.4	3.2	85,000	Rockwell B80	ASTM A582	000000000	0000
M4	0.5	M5	0.8	9.5	9.5	Class 6g	Class 6g	7.9	3.2	85,000	Rockwell B80	ASTM A582	000000000	0000
M4	0.7	M5	0.5	9.5	9.5	Class 6g	Class 6g	7.9	3.2	85,000	Rockwell B80	ASTM A582	000000000	0000
M4	0.7	M5	0.8	9.5	9.5	Class 6g	Class 6g	8	3.2	85,000	Rockwell B80	ASTM A582	000000000	0000
M4	0.7	M6	1	9.5	12.7	Class 6g	Class 6g	13	6.35	85,000	Rockwell B80	ASTM A582	000000000	0000
M4	0.7	M8	1.25	9.5	12.7	Class 6g	Class 6g	13	6.35	85,000	Rockwell B80	ASTM A582	000000000	0000
M5	0.5	M5	0.8	9.5	9.5	Class 6g	Class 6g	7.9	3.2	85,000	Rockwell B80	ASTM A582	000000000	0000
M5	0.5	M6	1	9.5	12.7	Class 6g	Class 6g	9.5	4.8	85,000	Rockwell B80	ASTM A582	000000000	0000
M5	0.8	M6	0.75	9.5	12.7	Class 6g	Class 6g	9.5	4.8	85,000	Rockwell B80	ASTM A582	000000000	0000
M5	0.8	M6	1	9.5	12.7	Class 6g	Class 6g	10	4.8	85,000	Rockwell B80	ASTM A582	000000000	0000
M5	0.8	M8	1.25	9.5	12.7	Class 6g	Class 6g	13	6.35	85,000	Rockwell B80	ASTM A582	000000000	0000
M6	0.75	M8	1	12.7	12.7	Class 6g	Class 6g	12.7	4.8	85,000	Rockwell B80	ASTM A582	000000000	0000