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NAS6604-17

Close Tolerance Bolt

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Description

NAS6604 Shear Bolts Thread 1/4-28

Specifications

Alternate Part Number NAS1304-17
Country of Origin USA
Drilling Undrilled Head
Fastener Length Between 1.472 inches and 1.502 inches
Grip 1.062 in
Grip Diameter Between 0.248 inches and 0.249 inches
Grip Length Between 1.052 inches and 1.072 inches
Grip Tolerance ±0.010 in
Head Height Between 0.125 inches and 0.140 inches
Head Style Dished hexagon
Head Type Hexagon
Industry Standards/Certification NAS6604
Length 1 1/2, 1.487 in
Material Steel
Material Specification Mil-s-5626 military specification 1st material response or ams 6415 assn standard 2nd material response or mil-s-5000 military specification 3rd material response
Min. Tensile Strength (psi) 160000 pounds per square inch
NIIN 01-499-1489
NSN 5306-01-499-1489
Surface Treatment Cadmium
Surface Treatment Specification Cl 2 federal specification single treatment response ty ii qq-p-416
Thread Class 3a
Thread Diameter 0.250
Thread Direction Right-hand
Thread Length 0.425
Thread Qty 28
Thread Qty Per Inch (tpi) 28
Thread Series UNJF
Thread Series Designator Unjf (fine thread with external controlled root radius)
Thread Size 0.2500-28, 1/4
Weight 0.0025 lb
Width Between Flats Between 0.429 inches and 0.439 inches

Cross-reference

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Catalog data updated 2026-07-05. Report a data error