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
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THREAD: AS8879
MATERIAL: C1050 carbon steel per AMS 5085 (UNS G10500).
FINISH: Cadmium plate per AMS-QQ-P-416, Type II, Class 2 and Kaylube molybdenum disulfide dry film lubricant per AS5272.
PERFORMANCE: NASM25027.
VARIATIONS: Add "BC" for bottom countersunk rivet holes. Example: K3100-3BC.
Unit of Measure

Specifications

A - MAX

 N/A 1.044

B - REF

 N/A 0.322

C ± .002

 N/A 0.707

D (± .005)

 N/A 0.686

E REF

 N/A 0.383

G ± .010

 N/A 0.230

H - MAX

 N/A 0.422

J (± .005)

 N/A 0.500

K +.005 / -.000

 N/A 0.130

V - REF

 N/A 0.050

Approx. Weight (LBS/100)

 N/A 1.440

Bottom countersunk rivet holes

 N/A No

Thread Type

 N/A Unified

Configuration 1

 N/A Corner

Configuration 2

 N/A Fixed

Configuration 3

 N/A 100° Countersunk

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 0.3125-24 UNJF-3B