PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 18664996-00
18664996-00 ✓ 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 BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1050 OR STEEL COMP 1053 OVERALL, head_style: HEXAGON, head_height: 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.875 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN, fastener_length: 1.563 INCHES MINIMUM AND 1.625 INCHES MAXIMUM 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 5306-00-018-6649, 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
18664996-00
NSN: 5306-00-018-6649
FSC: 5306
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 1050 OR STEEL COMP 1053 OVERALL
head_styleHEXAGON
head_height0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
thread_class2A A
thread_length0.875 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN
fastener_length1.563 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN
hardness_rating32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
nominal_thread_diameter0.312 INCHES IN
minimum_tensile_strength150000 POUNDS PER SQUARE INCH LBS
NSN5306-00-018-6649
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 18664996-00 · 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
•
FASTENER LENGTH: 1.563 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN
•
WIDTH BETWEEN FLATS: 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
•
THREAD SERIES DESIGNATOR: UNF
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
FEATURES PROVIDED: FINISHED HEAD
•
HARDNESS RATING: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH1.563 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
HEAD HEIGHT0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
THREAD SERIES DESIGNATORUNF
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
FEATURES PROVIDEDFINISHED HEAD
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLEHEXAGON
MATERIALSTEEL COMP 1050 OR STEEL COMP 1053 OVERALL
NONDEFINITIVE SPEC/STD DATA3 TYPE AND 8 GRADE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
M1222RN12C48GFNNUpgraded Successor
successor cross-reference
successor
MIL-S-1222Upgraded Successor
successor cross-reference
successor
MIL-DTL-1222Upgraded Successor
successor cross-reference
successor
306-40172Upgraded Successor
successor cross-reference
successor
1D4703Upgraded Successor
successor cross-reference
successor
M1222RN14C260GCNZEUpgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 18664996-00?
18664996-00 is a BOLT,MACHINE.
What parts can replace 18664996-00?
There are 14 known substitutes for 18664996-00: M1222RN12C48GFNN, MIL-S-1222, MIL-DTL-1222 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 18664996-00?
18664996-00 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-018-6649. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026