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PartsTable / COMPONENT / ST3M959-5-7
ST3M959-5-7 ✓ 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 SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP XM-13 OVERALL, head_style: FLAT COUNTERSUNK, thread_class: 3A A, head_diameter: 0.625 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN, thread_length: 0.350 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-142-7196, 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
ST3M959-5-7
NSN: 5305-01-142-7196
FSC: 5305
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP XM-13 OVERALL
head_styleFLAT COUNTERSUNK
thread_class3A A
head_diameter0.625 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
thread_length0.350 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.798 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN
shoulder_length0.308 INCHES MINIMUM AND 0.328 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
shoulder_diameter0.3427 INCHES MINIMUM AND 0.3432 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatmentPASSIVATE OVERALL
NSN5305-01-142-7196
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ST3M959-5-7 · 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
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
MATERIAL: STEEL COMP XM-13 OVERALL
•
SHOULDER LENGTH: 0.308 INCHES MINIMUM AND 0.328 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD CLASS: 3A A
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
SHOULDER DIAMETER: 0.3427 INCHES MINIMUM AND 0.3432 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.350 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SHOULDER SHAPEROUND FIRST SHOULDER
MATERIALSTEEL COMP XM-13 OVERALL
SHOULDER LENGTH0.308 INCHES MINIMUM AND 0.328 INCHES MAXIMUM FIRST SHOULDER IN
THREAD CLASS3A A
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
SHOULDER DIAMETER0.3427 INCHES MINIMUM AND 0.3432 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.350 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
FASTENER LENGTH0.798 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
69312Interchangeable
interchangeable cross-reference
interchangeable
119-0157Interchangeable
interchangeable cross-reference
interchangeable
HT4049-5-7YInterchangeable
Same NIIN cross-reference
interchangeable
3M959-5-7Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ST3M959-5-7?
ST3M959-5-7 is a SCREW,SHOULDER.
What parts can replace ST3M959-5-7?
There are 4 known substitutes for ST3M959-5-7: 69312, 119-0157, HT4049-5-7Y and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ST3M959-5-7?
ST3M959-5-7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-142-7196. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026