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Heyco® Nylon Locknuts

NPT Thread-Straight NPS Threads for use with NPT Threaded Fittings

  • Part Numbers and Specifications
  • Features
THREAD TYPE
AND SIZE
PART NO.
BULK
PART NO.
100 PACK
DESCRIPTION PART DIMENSIONS CAD
Black Gray Black Gray A
Thickness
B
Wrenching Flats
in. mm. in. mm.
1/4 NPT M9142 M9143 3269 3270 NLN 1/4 NPT .265 6,7 .748 19,0 CAD
3/8 NPT 8461 8462 3271 3272 NLN 3/8 NPT .265 6,7 1.058 26,9 CAD
1/2 NPT 8463 8464 3273 3274 NLN 1/2 NPT .265 6,7 1.058 26,9 CAD
3/4 NPT 8465 8466 3275 3276 NLN 3/4 NPT .265 6,7 1.295 32,9 CAD
1 NPT 8467 8468 3277 3278 NLN 1 NPT .265 6,7 1.605 40,8 CAD
1-1/4 NPT M9144 M9145 3279* - NLN 1-1/4 NPT .281 7,1 1.968 50,0 CAD
1-1/2 NPT M9150 M9151 - - NLN 1-1/2 NPT .320 8,1 2.735 69,5 CAD
2 NPT M9156 M9157 - - NLN 2 NPT .375 9,5 2.835 72,0 CAD

Standard colors black or gray.
*PN 3279 is a 50 Pack.

QuickSpecs

Material Nylon 6/6
Flammability Rating 94V-2 Standard-Consult Heyco for VO material
Temperature Range -22°F (30°C) to 221°F (105°C)
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