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MATERIAL:
  • Bracket: Carbon Steel per AMS 5085, heat treat to HRc 42-47 Housing: Cres per AMS 5514
  • Nut: Carbon Steel per AMS 5085, heat treat to 160 Ksi min ultimate tensile strength
  • Sleeve: Cres per AMS 5639 or AMS 5514
  • Seal: Buna-N per MIL-R-6855, Class 1 & 2, Grade 60
FINISH CODE:
  • Bracket, Sleeve & Nut: Cad plate per AMS QQ-P-416, Type II, Class 2
  • Housing: Passjvate per AMS-QQ-P-35
  • Nut: Dri-Film Lube per MIL-PRF-46010
  • Seal: none
Unit of Measure

Nut Type

 N/A Locking
Thread Size1 N/A 0.2500-28 UNJF-3B
Lead2 N/A Single

H Max.

 N/A 0.560 Inch

L

 N/A 0.162 Inch

Ø M Max.

 N/A 0.291 Inch

Ø M Min.

 N/A 0.287 Inch

Ø Q +.0030/-.0000

 N/A 0.2945 Inch

Ø R1 +.020/-.000

 N/A 0.408 Inch

Ø R2 ±.005

 N/A 0.388 Inch

Ø S +.004/-.000

 N/A 0.250 Inch

Ø U Max.

 N/A 0.2540 Inch

Ø U Min.

 N/A 0.2522 Inch

Ø W

 N/A 0.780 Inch

Y

 N/A 0.352 Inch

Ø Z

 N/A 0.305 Inch

G1

 N/A 0.592 - 0.622 Inch

G2

 N/A 0.631 - 0.661 Inch
K3 N/A 0.657 Inch

Thread Type

 N/A Unified

N/A A minimum of two threads are deformed to produce self-locking action per MIL-N-25027 when locking feature is desired.

N/A

  • Nut element has .060 total radial float.
  • For high volume installation rates, alternative power tooling is available: contact alcos fastening systems sales dept.
  • Dimensions apply after installation due to the sleeve collapsing

    • 1 Class –3B threads per MIL-S-8879.
    • 2 Identification Dot: (PCD 160147)
            Yellow - Coarse threads
            Green – Non-Locking standard threads
            None-Locking standard threads
    • 3 "K" is measured from the bottom of the rolled-over housing.