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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MATERIAL: Alloy steel - Heat treated.

FINISH: Cadmium plate, AMS-QQ-P-416, type II, class 2.

LOCKING INSERT: Gold color nylon (250° F max. performance).

THREADS: AS 8879

PERFORMANCE: NASM 25027.

Contact Howmet for the diameter/type in manufacturing
Nut – Hex, Light, Thin, 250°F
Unit of Measure
1 

Item #

C

H - MAX

H - MIN

W - MAX

W - MIN

Approx. Weight

Thread

Part Family

T 604 N/A 0.268 Inch N/A 0.124 Inch N/A 0.094 Inch N/A 0.251 Inch N/A 0.243 Inch N/A 0.100 lb/100 N/A 0.1120-40 UNJC-3B N/A T6
T 606 N/A 0.339 Inch N/A 0.140 Inch N/A 0.110 Inch N/A 0.313 Inch N/A 0.305 Inch N/A 0.190 lb/100 N/A 0.1380-32 UNJC-3B N/A T6
T 608 N/A 0.374 Inch N/A 0.187 Inch N/A 0.157 Inch N/A 0.345 Inch N/A 0.336 Inch N/A 0.300 lb/100 N/A 0.1640-32 UNJC-3B N/A T6
T 63 N/A 0.410 Inch N/A 0.187 Inch N/A 0.157 Inch N/A 0.376 Inch N/A 0.367 Inch N/A 0.350 lb/100 N/A 0.1900-32 UNJF-3B N/A T6
T 64 N/A 0.482 Inch N/A 0.218 Inch N/A 0.188 Inch N/A 0.439 Inch N/A 0.430 Inch N/A 0.500 lb/100 N/A 0.2500-28 UNJF-3B N/A T6
T 65 N/A 0.552 Inch N/A 0.265 Inch N/A 0.235 Inch N/A 0.502 Inch N/A 0.492 Inch N/A 0.800 lb/100 N/A 0.3125-24 UNJF-3B N/A T6
T 66 N/A 0.622 Inch N/A 0.281 Inch N/A 0.251 Inch N/A 0.564 Inch N/A 0.553 Inch N/A 0.950 lb/100 N/A 0.3750-24 UNJF-3B N/A T6
T 68 N/A 0.837 Inch N/A 0.327 Inch N/A 0.313 Inch N/A 0.752 Inch N/A 0.741 Inch N/A 1.150 lb/100 N/A 0.5000-20 UNJF-3B N/A T6
Unit of Measure
1