12.7 mm Spacers | McMaster-Carr

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8 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.

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

316 Stainless Steel—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.

ASTM A276, ASTM A582, and ASTM B211—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.

			Thread Lg., mm		Thread Fit		Hex, mm
	Thread Size (A)	Thread Size (B)	(A)	(B)	(A)	(B)	Size	Length	Specs. Met	Tensile Strength, psi	Hardness		Each
Aluminum



		M6 x 1 mm	M8 x 1 mm	12.7	12.7	Metric Class 6g	Metric Class 6g	12.7	4.8	ASTM B211	45,000	Rockwell B56	000000000	00000


		M8 x 1 mm	M8 x 1.25 mm	12.7	12.7	Metric Class 6g	Metric Class 6g	12.7	4.8	ASTM B211	45,000	Rockwell B56	000000000	0000


		18-8 Stainless Steel



				M6 x 0.75 mm	M8 x 1 mm	12.7	12.7	Metric Class 6g	Metric Class 6g	12.7	4.8	ASTM A582	85,000	Rockwell B80	000000000	0000


				M6 x 1 mm	M8 x 1 mm	12.7	12.7	Metric Class 6g	Metric Class 6g	12.7	4.8	ASTM A582	85,000	Rockwell B80	000000000	0000


				316 Stainless Steel



						M6 x 0.75 mm	M8 x 1 mm	12.7	12.7	Metric Class 6g	Metric Class 6g	12.7	4.8	ASTM A276	75,000	Rockwell B83	000000000	00000


						M6 x 1 mm	M8 x 1 mm	12.7	12.7	Metric Class 6g	Metric Class 6g	12.7	4.8	ASTM A276	75,000	Rockwell B83	000000000	00000
						M6 x 1 mm	M8 x 1.25 mm	12.7	12.7	Metric Class 6g	Metric Class 6g	12.7	4.8	ASTM A276	75,000	Rockwell B83	000000000	00000
						M8 x 1 mm	M8 x 1.25 mm	12.7	12.7	Metric Class 6g	Metric Class 6g	12.7	4.8	ASTM A276	75,000	Rockwell B83	000000000	00000