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Technical Data Sheet
PartsTable / COMPONENT / 439B658PC2
439B658PC2 ✓ 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 410 OVERALL, head_style: HEADLESS (SETSCREW), point_style: FLAT, thread_class: 3A A, thread_length: 0.500 INCHES MINIMUM IN, fastener_length: 0.500 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 5305-00-436-7127, 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
439B658PC2
NSN: 5305-00-436-7127
FSC: 5305
CAGE: 01289 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 410 OVERALL
head_styleHEADLESS (SETSCREW)
point_styleFLAT
thread_class3A A
thread_length0.500 INCHES MINIMUM IN
fastener_length0.500 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_across_flats0.320 INCHES NOMINAL IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.625 INCHES IN
thread_quantity_per_inch18
thread_series_designatorUNF
NSN5305-00-436-7127
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 439B658PC2 · 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: 18
•
POINT STYLE: FLAT
•
THREAD LENGTH: 0.500 INCHES MINIMUM IN
•
THREAD SERIES DESIGNATOR: UNF
•
INTERNAL DRIVE STYLE: HEXAGON
•
MATERIAL: STEEL COMP 410 OVERALL
•
THREAD CLASS: 3A A
•
HEAD STYLE: HEADLESS (SETSCREW)
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH18
POINT STYLEFLAT
THREAD LENGTH0.500 INCHES MINIMUM IN
THREAD SERIES DESIGNATORUNF
INTERNAL DRIVE STYLEHEXAGON
MATERIALSTEEL COMP 410 OVERALL
THREAD CLASS3A A
HEAD STYLEHEADLESS (SETSCREW)
FASTENER LENGTH0.500 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.320 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
FF-S-200BInterchangeable
interchangeable cross-reference
interchangeable
FF-S-103Interchangeable
interchangeable cross-reference
interchangeable
FF-S-200Interchangeable
interchangeable cross-reference
interchangeable
231249Interchangeable
interchangeable cross-reference
interchangeable
FF-S-200B TYPE I STYLE 4Interchangeable
interchangeable cross-reference
interchangeable
AN565D10H6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 439B658PC2?
439B658PC2 is a SETSCREW.
What parts can replace 439B658PC2?
There are 17 known substitutes for 439B658PC2: FF-S-200B, FF-S-103, FF-S-200 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 439B658PC2?
439B658PC2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-436-7127. 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