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NAS8603-13 — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

NAS8603-13: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, grip_length: 0.1875 INCHES NOMINAL IN, grip_diameter: 0.070 INCHES NOMINAL IN, thread_length: 0.323 INCHES NOMINAL IN, special_features: HEAD STYLE IS CLOSE TOLERANCE,REDUCED HEAD,COUNTERSUNK SC. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-680-3439, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
NAS8603-13
NSN: 5306-01-680-3439
FSC: 5306 — Bolts
CAGE: 1TBU5 — GENUINE AIRCRAFT HARDWARE CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
grip_length0.1875 INCHES NOMINAL IN
grip_diameter0.070 INCHES NOMINAL IN
thread_length0.323 INCHES NOMINAL IN
special_featuresHEAD STYLE IS CLOSE TOLERANCE,REDUCED HEAD,COUNTERSUNK SC
NSN5306-01-680-3439
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: NAS8603-13 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
THREAD LENGTH: 0.323 INCHES NOMINAL IN
•
GRIP LENGTH: 0.1875 INCHES NOMINAL IN
•
GRIP DIAMETER: 0.070 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
THREAD LENGTH0.323 INCHES NOMINAL IN
GRIP LENGTH0.1875 INCHES NOMINAL IN
GRIP DIAMETER0.070 INCHES NOMINAL IN
SPECIAL FEATURESHEAD STYLE IS CLOSE TOLERANCE,REDUCED HEAD,COUNTERSUNK SC
MATERIALSTEEL OVERALL
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is NAS8603-13?
NAS8603-13 is a BOLT,CLOSE TOLERANCE.
What is the NSN for NAS8603-13?
NAS8603-13 is cataloged in the U.S. Government catalog under NSN 5306-01-680-3439. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.