Working Plug Gages for Checking Threaded Holes

1 3/8 12 WHIT THREAD PLUG GAGE 1.375 GO NO GO P.D.'S = 1.3216 & 1.3282 WHITWORTH - DW28770BC4

HILCO

M20 X .5 6H METRIC THREAD PLUG GAGE 20 0.5 GO NO GO P.D.'S = 19.6752 & 19.7962 - DW28769BC4

VERMONT GAGE

2 1/4 16 UN 2B LEFT HAND THREAD PLUG GAGE 2.25 GO NO GO = 2.2094 2.2164 CHECK - DW28768BC4

1 1/4 18 UNEF 2B PREPLATE THREAD PLUG GAGE 1.25 GO NO GO PD'S = 1.2145 & 1.2206 - DW28765BC4

HILCO

8 40 UNEF 2B THREAD PLUG GAGE #8 .164 .1640 GO NO GO P.D.'S = .1478 & .1515 UNS - DW28764BC4

NORTHERN GAUGE

3 1/4 12 UN 2B THREAD PLUG GAGE 3.25 3.250 GO NO GO P.D.'S = 3.1959 & 3.2042 - DW28761BC4

NORTHERN GAUGE

M62 X 4 6H METRIC THREAD PLUG GAGE 62 4.0 GO NO GO P.D.'S = 59.402 & 59.717 - DW28759BC4

SHOP MADE M60 X 3 6H METRIC THREAD PLUG GAGE 60 3.0 METRIC INSPECTION CHECK - DW28758BC4

NORTHERN GAUGE

1 3/8 20 UNS 2B LEFT HAND THREAD PLUG GAGE 1.375 GO NO GO PD'S = 1.3425 & 1.3486 - DW28757BC4

M62 X 4 6H METRIC THREAD PLUG GAGE 62 4.0 GO NO GO P.D.'S = 59.042 & 59.717 - DW28756BC4

NORTHERN GAUGE

M60 X 4 6H METRIC THREAD PLUG GAGE 60 4.0 GO NO GO P.D.'S = 57.402 & 57.717 - DW28754BC4

SHOP MADE 1 3/4 16 UN 2B LEFT HAND THREAD PLUG GAGE 1.75 1 3/4"-16 NO GO ONLY - DW28753BC4