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Amazon.com: Screw Chek'r SAE/ Inch Screw Thread Size Gauge (No. 1 to 5/16) 1/8 Inch Heavy Gauge Steel Screw Checker, Made in USA : Industrial & Scientific
No.8 (4mm) x 30mm Pozi Countersunk Wood Screws (DIN 7997Z) - A2 Stainless Steel: Accu.co.uk: Precision Screws
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Screw Chek'R Metric Screw Thread Size Gauge No. 2 (8MM to 14MM) 1/8 Inch Heavy G 7445057121170 | eBay
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