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313689 — BOLT,INTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

313689: BOLT,INTERNALLY RELIEVED BODY.

The BOLT,INTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, head_style: HEADLESS (SETSCREW), head_height: 0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN, head_diameter: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, thread_length: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN, fastener_length: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-558-7967, 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
313689
NSN: 5306-00-558-7967
FSC: 5306 — Bolts
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
head_styleHEADLESS (SETSCREW)
head_height0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
head_diameter0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
thread_length0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
fastener_length0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
style_designatorCONCENTRIC HOLE UNTHREADED
thread_directionRIGHT-HAND
nominal_thread_diameter0.312 INCHES IN
concentric_hole_diameter0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
thread_quantity_per_inch24
thread_series_designatorUNF
NSN5306-00-558-7967
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 313689 · 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
•
HEAD HEIGHT: 0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO FLAT: 0.200 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: CONCENTRIC HOLE UNTHREADED
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
HEAD STYLE: HEADLESS (SETSCREW)
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
FASTENER LENGTH0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO FLAT0.200 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN
THREAD LENGTH0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
STYLE DESIGNATORCONCENTRIC HOLE UNTHREADED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES IN
HEAD STYLEHEADLESS (SETSCREW)
THREAD DIRECTIONRIGHT-HAND
NONSTANDARD THREAD PITCH DIAMETER+0.2797 TO 0.2824 INCHES IN
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 313689?
313689 is a BOLT,INTERNALLY RELIEVED BODY.
What is the NSN for 313689?
313689 is cataloged in the U.S. Government catalog under NSN 5306-00-558-7967. 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.