SPI Thread Detective: Mini inch/Metric Screw Pitch Gage for Nuts & Bolts
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SPI Thread Detective: Mini inch/Metric Screw Pitch Gage for Nuts & Bolts
Precise and easy-to-use internal and external thread identifiers for nuts and bolts
Permanent, easy-to-read size markings are laser etched into each stand off
Steel identifiers are strung on a wire lanyard with shatterproof, color-coded polypropylene gauge divider beads to allow recognition between inch and metric strands
9 Inch thread standards: 1-64, 1-72, 2-56, 2-64, 3-48, 3-56, 4-40, 4-48, and 5-40.