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THREAD: AS8819
MATERIAL:
  • Nut and Basket - A286 corrosion resistant steel per AMS5525, AMS5732 or AMS5737 (UNS S66286).
  • Clip - corrosion resistant steel or ARMCO 18-2MN (NITRONIC).
FINISH:
  • F50732-(*)-(*)

  • Nut - Passivate per AMS2700 and Molybdenum disulfide dry film lubricant coat.
    Basket and Clip - Passivate per AMS2700.
  • F50732-(*)S(*)
    Nut - Silver plate per AMS2411.
    Basket and Clip - Passivate per AMS2700.
PERFORMANCE:NASM25027, except as follows:
  • F50732-(*)-(*) only: reuseability of 50 cycles using A-286 or 13-8 Mo bolts, seated to maximum torque values as tabulated.
  • Push out and twist out values as tabulated when applied both separately and combinated.
  • Axial tensile strength as tabulated.
VARIATIONS:
Add "BC" for bottom countersunk rivet holes. Example: F50732-3-4BC.
Add "P" for projection weld nibs. Example: F50732-3-4P.
NOTES:
  1. FLOABILITY: .030 minimum radialy from centered position.
  2. NUT:
    • F50732-(*)-(*) assembly - use F51442-(*)-(*)XN.
    • F50732-(*)S(*) assembly - use F51442-(*)S(*)XN.
Unit of Measure

Specifications

A - MAX

1.292

B - MAX

0.584

C

0.505-0.495

D (REF)

0.254

H - MAX

0.481

J

1.002-0.998

K

0.103-0.098

M - MIN

0.250

R - MIN

0.100

V

0.037-0.027 0.037 Inch

W - MAX

0.547

Approx. Weight (LBS/100)

1.340

Push Out (LBS. MIN)

225

Twist Out (LBS. MIN)

160

Seating Torque (LBS.MAX)

60

Axial Tensile Strength (LBS. MIN)

5060

Bottom countersunk rivet holes

No

Bottom projected weld nibs

No

Nut Finish

Passivate per AMS2700 and Molybdenum Disulfide Dry Film Lubricant Coat

Thread Type

Unified

Configuration 1

Two Lug

Configuration 2

Floating

Configuration 3

Replaceable Nut

Lock

Crimp Lock

Simplified Material

CRES

Strength

125KSI - 900Mpa

Temperature

450°F - 235°C

Thread

0.2500-28 UNJF-3B