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A78325-4H-8 — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

A78325-4H-8: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 718 OVERALL, hole_type: DRILLED, head_style: SPLINE EXTENDED WASHER, grip_length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, head_height: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, thread_class: 3A A. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-361-7057, 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
A78325-4H-8
NSN: 5306-01-361-7057
FSC: 5306 — Bolts
CAGE: 94697 — MOOG INC (USA)
SPECIFICATIONS
materialNICKEL ALLOY 718 OVERALL
hole_typeDRILLED
head_styleSPLINE EXTENDED WASHER
grip_length0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
head_height0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
hole_diameter0.095 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
hole_quantity4
thread_length0.495 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
fastener_length0.980 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
NSN5306-01-361-7057
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: A78325-4H-8 · 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: 0.026 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.980 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.495 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
HOLE CONFIGURATION STYLE: SPLINE
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.026 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
HEAD HEIGHT0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
FASTENER LENGTH0.980 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN
THREAD LENGTH0.495 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
HOLE CONFIGURATION STYLESPLINE
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLESPLINE EXTENDED WASHER
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 A78325-4H-8?
A78325-4H-8 is a BOLT,CLOSE TOLERANCE.
What is the NSN for A78325-4H-8?
A78325-4H-8 is cataloged in the U.S. Government catalog under NSN 5306-01-361-7057. 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.