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Technical Data Sheet
PartsTable / COMPONENT / 179 851
179 851 ✓ 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 179 851 is a the manufacturer industrial component. Key specifications include color: GRAY, LIGHT AND BLACK, LUSTERLESS, outside_diameter: 1.672 INCHES NOMINAL IN, special_features: SPRING CLIP IS 0.250 DIAMETER W/0.218 FLAT; MOUNTING METHOD: SPRING CLIP, style_designator: ROUND, overall_thickness: 0.734 INCHES NOMINAL IN, end_item_identification: WELDING MACH. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-017-9851, 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
179 851
NSN: 5305-00-017-9851
FSC: 5305
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
colorGRAY, LIGHT AND BLACK, LUSTERLESS
outside_diameter1.672 INCHES NOMINAL IN
special_featuresSPRING CLIP IS 0.250 DIAMETER W/0.218 FLAT; MOUNTING METHOD: SPRING CLIP
style_designatorROUND
overall_thickness0.734 INCHES NOMINAL IN
end_item_identificationWELDING MACH
NSN5305-00-017-9851
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 179 851 · 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 CLASS: 2A A
•
FASTENER LENGTH: 3.000 INCHES NOMINAL IN
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 10P STYLE AND 5 GRADE
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
HARDNESS RATING: 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL: STEEL OVERALL
•
THREAD QUANTITY PER INCH: 16
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2A A
FASTENER LENGTH3.000 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 10P STYLE AND 5 GRADE
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
HARDNESS RATING23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
MATERIALSTEEL OVERALL
THREAD QUANTITY PER INCH16
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH1.000 INCHES MINIMUM IN
MINIMUM TENSILE STRENGTH120000 POUNDS PER SQUARE INCH LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
1C648Interchangeable
interchangeable cross-reference
interchangeable
15732Interchangeable
interchangeable cross-reference
interchangeable
905667Interchangeable
interchangeable cross-reference
interchangeable
179 851Interchangeable
interchangeable cross-reference
interchangeable
MS35295-70Interchangeable
Same NIIN cross-reference
interchangeable
FFS85TYPE2STYLE10PGRADE5Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 179 851?
179 851 is a 179 851.
What parts can replace 179 851?
There are 6 known substitutes for 179 851: 1C648, 15732, 905667 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 179 851?
179 851 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-017-9851. 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