Howmet Fastening Systems
Howmet Fastening Systems
Phone: Sales +1 800 992 4444
Technical Support +1 310 784 6409
Email: HFSTechSupport@howmet.com
Website: www.hfs.howmet.com
Print Back
THREAD: AS8879
MATERIAL: C1050 Carbon steel per AMS 5085 (UNS G10500), heat treated.
FINISH:
  • MK2400-(*) - Cadmium plate per NASM25027, Type II, Class 2, plus Kaylube molybdenum disulfide dry film lubricant coat per AS5272, Type I and NAS3356 (suitability of lubricant coatings).
  • MK2400X(*) - Cadmium plate per NASM25027, Type II, Class 2.
PERFORMANCE: NASM25027, Class II.
TEMPERATURE: 450°F.
VARIATIONS: Add "BC" for bottom countersunk rivet holes. Example MK2400-4BC.
NOTES: Dimensioning and tolerancing per ASME Y14.5M-1994.
MK2400 Anchor Nut - Miniature, One-Lug, 160,000 PSI
Unit of Measure
1 

Item #

A - MAX

C

D - MIN

F - MIN

H - MAX

J

K

M - MIN

P - MAX

V - MAX

W

Approx. Weight (LBS/100)

Thread

MK2400X04 N/A 0.667 N/A 0.203 N/A 0 N/A 0.089 N/A 0.143 N/A 0.221-0.217 N/A 0.103-0.098 N/A 0 N/A 0.166 N/A 0.040 N/A 0.260-0.140 N/A 0.120 N/A 0.1120-40 UNJC-3B
MK2400X06 N/A 0.684 N/A 0.218 N/A 0 N/A 0.089 N/A 0.171 N/A 0.221-0.217 N/A 0.103-0.098 N/A 0 N/A 0.206 N/A 0.047 N/A 0.265-0.195 N/A 0.150 N/A 0.1380-32 UNJC-3B
MK2400X08 N/A 0.716 N/A 0.234 N/A 0.168 N/A 0.100 N/A 0.250 N/A 0.221-0.217 N/A 0.103-0.098 N/A 0.062 N/A 0.248 N/A 0.047 N/A 0.297-0.235 N/A 0.230 N/A 0.1640-32 UNJC-3B
MK2400X3 N/A 0.745 N/A 0.250 N/A 0.194 N/A 0.100 N/A 0.250 N/A 0.221-0.217 N/A 0.103-0.098 N/A 0.062 N/A 0.274 N/A 0.047 N/A 0.328-0.298 N/A 0.270 N/A 0.1900-32 UNJF-3B
MK2400X4 N/A 0.822 N/A 0.281 N/A 0.254 N/A 0.100 N/A 0.281 N/A 0.221-0.217 N/A 0.103-0.098 N/A 0.062 N/A 0.344 N/A 0.055 N/A 0.414-0.380 N/A 0.460 N/A 0.2500-28 UNJF-3B
MK2400-04BC N/A 0.667 N/A 0.203 N/A 0 N/A 0.089 N/A 0.143 N/A 0.221-0.217 N/A 0.103-0.098 N/A 0 N/A 0.166 N/A 0.040 N/A 0.260-0.140 N/A 0.120 N/A 0.1120-40 UNJC-3B
MK2400-06BC N/A 0.684 N/A 0.218 N/A 0 N/A 0.089 N/A 0.171 N/A 0.221-0.217 N/A 0.103-0.098 N/A 0 N/A 0.206 N/A 0.047 N/A 0.265-0.195 N/A 0.150 N/A 0.1380-32 UNJC-3B
MK2400-4BC N/A 0.822 N/A 0.281 N/A 0.254 N/A 0.100 N/A 0.281 N/A 0.221-0.217 N/A 0.103-0.098 N/A 0.062 N/A 0.344 N/A 0.055 N/A 0.414-0.380 N/A 0.460 N/A 0.2500-28 UNJF-3B
MK2400X04BC N/A 0.667 N/A 0.203 N/A 0 N/A 0.089 N/A 0.143 N/A 0.221-0.217 N/A 0.103-0.098 N/A 0 N/A 0.166 N/A 0.040 N/A 0.260-0.140 N/A 0.120 N/A 0.1120-40 UNJC-3B
MK2400X06BC N/A 0.684 N/A 0.218 N/A 0 N/A 0.089 N/A 0.171 N/A 0.221-0.217 N/A 0.103-0.098 N/A 0 N/A 0.206 N/A 0.047 N/A 0.265-0.195 N/A 0.150 N/A 0.1380-32 UNJC-3B
MK2400X08BC N/A 0.716 N/A 0.234 N/A 0.168 N/A 0.100 N/A 0.250 N/A 0.221-0.217 N/A 0.103-0.098 N/A 0.062 N/A 0.248 N/A 0.047 N/A 0.297-0.235 N/A 0.230 N/A 0.1640-32 UNJC-3B
MK2400X3BC N/A 0.745 N/A 0.250 N/A 0.194 N/A 0.100 N/A 0.250 N/A 0.221-0.217 N/A 0.103-0.098 N/A 0.062 N/A 0.274 N/A 0.047 N/A 0.328-0.298 N/A 0.270 N/A 0.1900-32 UNJF-3B
MK2400X4BC N/A 0.822 N/A 0.281 N/A 0.254 N/A 0.100 N/A 0.281 N/A 0.221-0.217 N/A 0.103-0.098 N/A 0.062 N/A 0.344 N/A 0.055 N/A 0.414-0.380 N/A 0.460 N/A 0.2500-28 UNJF-3B
Unit of Measure
1