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Technical Data Sheet
PartsTable / COMPONENT / 531635-2
531635-2 ✓ 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 THUMBSCREW is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, head_style: KNURLED NO. 2, head_height: 0.250 INCHES NOMINAL IN, point_style: FLAT, thread_class: 2A A, head_diameter: 0.438 INCHES NOMINAL IN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-094-1392, 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
531635-2
NSN: 5305-01-094-1392
FSC: 5305
CAGE: 96214 — RAYTHEON COMPANY DBA RAYTHEON (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
head_styleKNURLED NO. 2
head_height0.250 INCHES NOMINAL IN
point_styleFLAT
thread_class2A A
head_diameter0.438 INCHES NOMINAL IN
thread_length0.406 INCHES NOMINAL IN
fastener_length0.530 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentNICKEL OVERALL
nominal_thread_diameter0.164 INCHES IN
thread_quantity_per_inch32
NSN5305-01-094-1392
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 531635-2 · 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
•
THREAD QUANTITY PER INCH: 32
•
THREAD LENGTH: 0.406 INCHES NOMINAL IN
•
POINT STYLE: FLAT
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-N-290 TYPE VI FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-626 COMP 22 1/2HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT: NICKEL OVERALL
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH32
THREAD LENGTH0.406 INCHES NOMINAL IN
POINT STYLEFLAT
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-N-290 TYPE VI FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626 COMP 22 1/2HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTNICKEL OVERALL
MATERIALCOPPER ALLOY OVERALL
FASTENER LENGTH0.530 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.164 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
F-165-813-119Interchangeable
interchangeable cross-reference
interchangeable
ML251893-3-28AInterchangeable
interchangeable cross-reference
interchangeable
1120BInterchangeable
interchangeable cross-reference
interchangeable
889488-2Interchangeable
interchangeable cross-reference
interchangeable
350-B-1Interchangeable
interchangeable cross-reference
interchangeable
2001070-001Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 531635-2?
531635-2 is a THUMBSCREW.
What parts can replace 531635-2?
There are 8 known substitutes for 531635-2: F-165-813-119, ML251893-3-28A, 1120B and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 531635-2?
531635-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-094-1392. 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