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399365 — RELAY ASSEMBLY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

399365: RELAY ASSEMBLY.

The RELAY ASSEMBLY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 601 OVERALL, head_style: DOUBLE HEXAGON EXTENDED WASHER, grip_length: 0.315 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, head_height: 0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN, thread_class: 1A A, thread_length: 0.760 INCHES MINIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-062-8201, 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
399365
NSN: 5306-00-062-8201
NIINs: 000628201, 008535016
FSC: 5306 — Bolts
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL COMP 601 OVERALL
head_styleDOUBLE HEXAGON EXTENDED WASHER
grip_length0.315 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
head_height0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
thread_class1A A
thread_length0.760 INCHES MINIMUM IN
fastener_length1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
hardness_rating30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
surface_treatmentNICKEL AND CADMIUM OVERALL
width_between_flats0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
NSN5306-00-062-8201
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 399365 · 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
•
EXTENDED WASHER THICKNESS: 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.760 INCHES MINIMUM IN
•
HARDNESS RATING: 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
HEAD HEIGHT0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
FASTENER LENGTH1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
THREAD LENGTH0.760 INCHES MINIMUM IN
HARDNESS RATING30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEDOUBLE HEXAGON EXTENDED WASHER
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 399365?
399365 is a RELAY ASSEMBLY.
What is the NSN for 399365?
399365 is cataloged in the U.S. Government catalog under NSN 5306-00-062-8201. 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.