THREAD: AS8879
MATERIAL: C1050 Carbon steel, heat treated Rc. 49 max.
FINISH:
  • MK1000-(*) Cadmium plate per AMS-QQ-P-416, Type II, Class, plus Kaylube molybdenum disulfide dry lubricant coat per AS5272.
  • MK1000X(*) Cadmium plate per AMS-QQ-P-416, Type II, Class.
  • MK1000-(*)CW Cadmium plate per AMS-QQ-P-416, Type II, Class, plus carbowax.
PERFORMANCE: NASM25027.
TEMPERATURE: 450°F.
VARIATIONS: Add "BC" for bottom countersunk rivet holes. Example: MK1000-3BC.
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Item #

A ± .005

B - REF

C ± .002

D - MIN

H - MAX

K +.005 / -.000

L - MAX

V - REF

W - MAX

Approx. Weight (LBS/100)

Thread

MK1000-04 N/A 0.203 N/A 0.107 N/A 0.406 N/A 0 N/A 0.130 N/A 0.098 N/A 0.626 N/A 0.025 N/A 0.260 N/A 0.090 N/A 0.1120-40 UNJC-3B
MK1000-06 N/A 0.218 N/A 0.107 N/A 0.437 N/A 0 N/A 0.145 N/A 0.098 N/A 0.657 N/A 0.032 N/A 0.260 N/A 0.120 N/A 0.1380-32 UNJC-3B
MK1000-08 N/A 0.234 N/A 0.107 N/A 0.468 N/A 0.168 N/A 0.215 N/A 0.098 N/A 0.692 N/A 0.032 N/A 0.260 N/A 0.170 N/A 0.1640-32 UNJC-3B
MK1000-3 N/A 0.250 N/A 0.107 N/A 0.500 N/A 0.194 N/A 0.220 N/A 0.098 N/A 0.724 N/A 0.032 N/A 0.328 N/A 0.200 N/A 0.1900-32 UNJF-3B
MK1000-4 N/A 0.281 N/A 0.107 N/A 0.562 N/A 0.254 N/A 0.281 N/A 0.098 N/A 0.786 N/A 0.040 N/A 0.414 N/A 0.350 N/A 0.2500-28 UNJF-3B
MK1000-5 N/A 0.312 N/A 0.125 N/A 0.625 N/A 0.317 N/A 0.328 N/A 0.130 N/A 0.900 N/A 0.050 N/A 0.515 N/A 0.600 N/A 0.3125-24 UNJF-3B
MK1000X04 N/A 0.203 N/A 0.107 N/A 0.406 N/A 0 N/A 0.130 N/A 0.098 N/A 0.626 N/A 0.025 N/A 0.260 N/A 0.090 N/A 0.1120-40 UNJC-3B
MK1000X06 N/A 0.218 N/A 0.107 N/A 0.437 N/A 0 N/A 0.145 N/A 0.098 N/A 0.657 N/A 0.032 N/A 0.260 N/A 0.120 N/A 0.1380-32 UNJC-3B
MK1000X08 N/A 0.234 N/A 0.107 N/A 0.468 N/A 0.168 N/A 0.215 N/A 0.098 N/A 0.692 N/A 0.032 N/A 0.260 N/A 0.170 N/A 0.1640-32 UNJC-3B
MK1000X3 N/A 0.250 N/A 0.107 N/A 0.500 N/A 0.194 N/A 0.220 N/A 0.098 N/A 0.724 N/A 0.032 N/A 0.328 N/A 0.200 N/A 0.1900-32 UNJF-3B
MK1000X4 N/A 0.281 N/A 0.107 N/A 0.562 N/A 0.254 N/A 0.281 N/A 0.098 N/A 0.786 N/A 0.040 N/A 0.414 N/A 0.350 N/A 0.2500-28 UNJF-3B
MK1000X5 N/A 0.312 N/A 0.125 N/A 0.625 N/A 0.317 N/A 0.328 N/A 0.130 N/A 0.900 N/A 0.050 N/A 0.515 N/A 0.600 N/A 0.3125-24 UNJF-3B
MK1000-04CW N/A 0.203 N/A 0.107 N/A 0.406 N/A 0 N/A 0.130 N/A 0.098 N/A 0.626 N/A 0.025 N/A 0.260 N/A 0.090 N/A 0.1120-40 UNJC-3B
MK1000-06CW N/A 0.218 N/A 0.107 N/A 0.437 N/A 0 N/A 0.145 N/A 0.098 N/A 0.657 N/A 0.032 N/A 0.260 N/A 0.120 N/A 0.1380-32 UNJC-3B
MK1000-08CW N/A 0.234 N/A 0.107 N/A 0.468 N/A 0.168 N/A 0.215 N/A 0.098 N/A 0.692 N/A 0.032 N/A 0.260 N/A 0.170 N/A 0.1640-32 UNJC-3B
MK1000-3CW N/A 0.250 N/A 0.107 N/A 0.500 N/A 0.194 N/A 0.220 N/A 0.098 N/A 0.724 N/A 0.032 N/A 0.328 N/A 0.200 N/A 0.1900-32 UNJF-3B
MK1000-4CW N/A 0.281 N/A 0.107 N/A 0.562 N/A 0.254 N/A 0.281 N/A 0.098 N/A 0.786 N/A 0.040 N/A 0.414 N/A 0.350 N/A 0.2500-28 UNJF-3B
MK1000-5CW N/A 0.312 N/A 0.125 N/A 0.625 N/A 0.317 N/A 0.328 N/A 0.130 N/A 0.900 N/A 0.050 N/A 0.515 N/A 0.600 N/A 0.3125-24 UNJF-3B
MK1000-08BC N/A 0.234 N/A 0.107 N/A 0.468 N/A 0.168 N/A 0.215 N/A 0.098 N/A 0.692 N/A 0.032 N/A 0.260 N/A 0.170 N/A 0.1640-32 UNJC-3B
MK1000-3BC N/A 0.250 N/A 0.107 N/A 0.500 N/A 0.194 N/A 0.220 N/A 0.098 N/A 0.724 N/A 0.032 N/A 0.328 N/A 0.200 N/A 0.1900-32 UNJF-3B
MK1000-4BC N/A 0.281 N/A 0.107 N/A 0.562 N/A 0.254 N/A 0.281 N/A 0.098 N/A 0.786 N/A 0.040 N/A 0.414 N/A 0.350 N/A 0.2500-28 UNJF-3B
MK1000-5BC N/A 0.312 N/A 0.125 N/A 0.625 N/A 0.317 N/A 0.328 N/A 0.130 N/A 0.900 N/A 0.050 N/A 0.515 N/A 0.600 N/A 0.3125-24 UNJF-3B
MK1000X04BC N/A 0.203 N/A 0.107 N/A 0.406 N/A 0 N/A 0.130 N/A 0.098 N/A 0.626 N/A 0.025 N/A 0.260 N/A 0.090 N/A 0.1120-40 UNJC-3B
MK1000X06BC N/A 0.218 N/A 0.107 N/A 0.437 N/A 0 N/A 0.145 N/A 0.098 N/A 0.657 N/A 0.032 N/A 0.260 N/A 0.120 N/A 0.1380-32 UNJC-3B
MK1000X08BC N/A 0.234 N/A 0.107 N/A 0.468 N/A 0.168 N/A 0.215 N/A 0.098 N/A 0.692 N/A 0.032 N/A 0.260 N/A 0.170 N/A 0.1640-32 UNJC-3B
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