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THREAD: AS8879
MATERIAL: Carbon or alloy steel, heat treated.
FINISH: Cadmium plate per AMS-QQ-P-416, Type II, Class 2, plus Kaylube molybdenum disulfide dry film lubricant coat per AS5272.
PERFORMANCE: NASM25027.
FLOATABILITY: .030 minimum radially from center.
TEMPERATURE: 450°F.
VARIATIONS: Add "BC" for bottom countersunk rivet holes. Example: F1934-3-3BC.
Unit of Measure

Specifications

A - MAX

 N/A 1.292

B - REF

 N/A 0.282

C ± .005

 N/A 0.500

D - MIN

 N/A 0.254

H - MAX

 N/A 0.718

J ± .002

 N/A 1.000

K +.005 / -.000

 N/A 0.098

M - MIN

 N/A 0.500

P - REF

 N/A 0.312

V - REF

 N/A 0.025

W - MAX

 N/A 0.516

Approx. Weight (LBS/100)

 N/A 1.200

Bottom countersunk rivet holes

 N/A Yes

Thread Type

 N/A Unified

Configuration 1

 N/A Two Lug

Configuration 2

 N/A Floating

Configuration 3

 N/A Deep C'Bore

Lock

 N/A Crimp Lock

Simplified Material

 N/A Alloy Steel

Strength

 N/A 125KSI - 900Mpa

Temperature

 N/A 450°F - 235°C

Thread

 N/A 0.2500-28 UNJF-3B