Female Thread Fit: Class 2B. Female Thread Length: 1/4. Female Thread Size: 4-40. Hardness: Rockwell B55. Hex Length: 3/8. Hex Length Tolerance
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4-40 x 1/2 Three Sixteenths Hex Male Female Standoff Stainless Steel
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1/4 OD x 3/8 L x 8-32 Thread Stainless Steel Male/Female Hex
3/16 Hex x 5/16 Length x 4-40 Thread Male-Female Standoff, Zinc
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Electronic Standoffs & Spacers