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Technical Data Sheet
PartsTable / COMPONENT / 639604
639604 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1035 OVERALL, head_style: HEADLESS (SETSCREW), point_style: OVAL, thread_class: 3A A, thread_length: 0.750 INCHES MINIMUM IN, fastener_length: 1.750 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-270-7330, 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
639604
NSN: 5305-00-270-7330
FSC: 5305
CAGE: 58275 — SASCO INC CANADIAN DIV
SPECIFICATIONS
materialSTEEL COMP 1035 OVERALL
head_styleHEADLESS (SETSCREW)
point_styleOVAL
thread_class3A A
thread_length0.750 INCHES MINIMUM IN
fastener_length1.750 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
internal_drive_styleSLOT
nominal_thread_diameter0.312 INCHES IN
thread_quantity_per_inch18
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-00-270-7330
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 639604 · 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
•
POINT STYLE: OVAL
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
FASTENER LENGTH: 1.750 INCHES NOMINAL IN
•
THREAD CLASS: 3A A
•
INTERNAL DRIVE STYLE: SLOT
•
HEAD STYLE: HEADLESS (SETSCREW)
•
THREAD LENGTH: 0.750 INCHES MINIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
POINT STYLEOVAL
NOMINAL THREAD DIAMETER0.312 INCHES IN
SURFACE TREATMENTCADMIUM OVERALL
FASTENER LENGTH1.750 INCHES NOMINAL IN
THREAD CLASS3A A
INTERNAL DRIVE STYLESLOT
HEAD STYLEHEADLESS (SETSCREW)
THREAD LENGTH0.750 INCHES MINIMUM IN
MATERIALSTEEL COMP 1035 OVERALL
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
96364Interchangeable
interchangeable cross-reference
interchangeable
2-300-313-02Interchangeable
interchangeable cross-reference
interchangeable
AE702992-1Interchangeable
interchangeable cross-reference
interchangeable
953476Interchangeable
interchangeable cross-reference
interchangeable
5UU0280Interchangeable
interchangeable cross-reference
interchangeable
X54FInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 639604?
639604 is a SETSCREW.
What parts can replace 639604?
There are 19 known substitutes for 639604: 96364, 2-300-313-02, AE702992-1 and 16 more. Substitute compatibility should be verified for your specific system.
Is 639604 still available?
639604 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026