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189336 — BOLT,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

189336: BOLT,EXTERNALLY RELIEVED BODY.

The BOLT,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 416F OVERALL, head_style: FLAT CHAMFER, head_height: 0.047 INCHES NOMINAL IN, head_diameter: 0.385 INCHES NOMINAL IN, thread_length: 0.792 INCHES NOMINAL IN, fastener_length: 1.438 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-308-3603, 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
189336
NSN: 5306-00-308-3603
FSC: 5306 — Bolts
CAGE: 0SML3 — AERO INTERNATIONAL, LLC DBA AMS ENGINEERED SOLUTIONS (USA)
SPECIFICATIONS
materialSTEEL COMP 416F OVERALL
head_styleFLAT CHAMFER
head_height0.047 INCHES NOMINAL IN
head_diameter0.385 INCHES NOMINAL IN
thread_length0.792 INCHES NOMINAL IN
fastener_length1.438 INCHES NOMINAL IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
nominal_thread_diameter0.250 INCHES IN
first_diameter_from_head0.308 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
third_diameter_from_head0.308 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
NSN5306-00-308-3603
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 189336 · 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
•
FOURTH DIAMETER FROM HEAD: 0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.047 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.438 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ES-091,FSCM 06848 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.792 INCHES NOMINAL IN
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM OVERALL
•
SHANK UNTHREADED HOLE DIAMETER: 0.047 INCHES NOMINAL FIRST HOLE IN
•
FIRST DIAMETER FROM HEAD: 0.308 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FOURTH DIAMETER FROM HEAD0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
HEAD HEIGHT0.047 INCHES NOMINAL IN
FASTENER LENGTH1.438 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONES-091,FSCM 06848 MFR REF SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.792 INCHES NOMINAL IN
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM OVERALL
SHANK UNTHREADED HOLE DIAMETER0.047 INCHES NOMINAL FIRST HOLE IN
FIRST DIAMETER FROM HEAD0.308 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER0.469 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-004-7044 5306-00-007-6129 5306-00-008-7899 5306-00-009-4739 5306-00-118-7332 5306-00-151-1777 5306-00-255-4507 5306-01-101-2459
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 189336?
189336 is a BOLT,EXTERNALLY RELIEVED BODY.
What is the NSN for 189336?
189336 is cataloged in the U.S. Government catalog under NSN 5306-00-308-3603. 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.