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Technical Data Sheet
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4075657A — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

4075657A: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, head_style: SQUARE, head_height: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.640 INCHES MINIMUM AND 0.710 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES GRIP. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-321-3563, 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
4075657A
NSN: 5306-01-321-3563
FSC: 5306 — Bolts
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
head_styleSQUARE
head_height0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
thread_class3A A
thread_length0.640 INCHES MINIMUM AND 0.710 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES GRIP
fastener_length1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN
special_featuresBOTTOM OF HEAD CHAMFERRED 0.035/0.045 IN. X 40.0/50.0 DEGREES ALL FOUR SIDES;THREADS MODIFIED 0.181/0.187 MAJOR DIA IN
thread_directionRIGHT-HAND
width_between_flats0.430 INCHES NOMINAL IN
end_item_identificationF100PW0229 ENGINE
nominal_thread_diameter0.190 INCHES IN
NSN5306-01-321-3563
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4075657A · 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
•
SURFACE FINISH: 63.0 MICROINCHES GRIP
•
HEAD HEIGHT: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.640 INCHES MINIMUM AND 0.710 INCHES MAXIMUM IN
•
SHANK UNTHREADED HOLE DIAMETER: 0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: PWA 96,CAGE77445 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES GRIP
SURFACE FINISH63.0 MICROINCHES BEARING SURFACE OF HEAD
HEAD HEIGHT0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
FASTENER LENGTH1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN
THREAD LENGTH0.640 INCHES MINIMUM AND 0.710 INCHES MAXIMUM IN
SHANK UNTHREADED HOLE DIAMETER0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN
MATERIAL DOCUMENT AND CLASSIFICATIONPWA 96,CAGE77445 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLESQUARE
THREAD DIRECTIONRIGHT-HAND
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 2
4075657Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5306PL1499367Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4075657A?
4075657A is a BOLT,MACHINE.
What parts can replace 4075657A?
There are 2 known substitutes for 4075657A: 4075657, 5306PL1499367. Substitute compatibility should be verified for your specific system.
What is the NSN for 4075657A?
4075657A is cataloged in the U.S. Government catalog under NSN 5306-01-321-3563. This indicates validated use in U.S. government and defense supply chains.
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