1/4 - 28

1/4 28 NF 2 & 3 SOLID THREAD RING GAGE .25 GO ONLY P.D. = .2268 1/4-28 NF-2 NF-3

VAN KEUREN

1/4 28 UNS SPECIAL PITCH DIA. THREAD RING GAGE .25 GO ONLY P.D. = .2248 .250-28

1/4 28 NF NON STANDARD THREAD RING GAGE .25 GO ONLY P.D. = .2248 STD. SPECIAL

R & K TOOL

1/4 28 UNF 2A PREPLATE THREAD RING GAGE .25 NO GO ONLY P.D. = .2198 B/P P.P.

GAGE ASSEMBLY CO.

1/4 28 UNF 2A PREPLATE THREAD RING GAGES .25 GO NO GO P.D.'S = .2228 & .2195

1/4 28 UNF 2A SPECIAL PITCH DIA THREAD RING GAGE .25 GO ONLY P.D. = .2245 SPEC.

PMC INDUSTRIES

1/4 28 UNF 2A SPECIAL PITCH DIA THREAD RING GAGE .25 GO ONLY P.D. = .2245 SPL.

1/4 28 NF LEFT HAND DOUBLE LEAD THREAD RING GAGE .25 GO ONLY P.D. = .2268 L.H.

VERMONT

1/4 28 UNF 3A VERMONT THREAD RING GAGE .25 NO GO ONLY P.D.= .2243 QUALITY 1/4-28

SHEFFIELD

1/4 28 NF 3 BEFORE PLATE THREAD RING GAGE .25 NO GO ONLY P.D. = .2300 B/P TOOL

G.A.CO.

1/4 28 UNF 2A SPECIAL THREAD RING GAGE .25 NO GO ONLY P.D.= .2220 QUALITY SPEC.

1/4 28 NF 1 THREAD RING GAGES .25 GO NO GO P.D.S = .2268 & .2213 QUALITY 1/4-28