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Technical Data Sheet
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12999211 — Technical Data Sheet

✓ 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 PLUNGER,DETENT is a the manufacturer industrial component. Key specifications include supplementary_features: LAUNCHER,GRENADE,40MM,M203 FOR M16 RIFLE MM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5305-00-958-7751, 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
12999211
NSN: 5305-00-958-7751
FSC: 5305
CAGE: 35351 — GE AVIATION SYSTEMS LLC (USA)
SPECIFICATIONS
supplementary_featuresLAUNCHER,GRENADE,40MM,M203 FOR M16 RIFLE MM
NSN5305-00-958-7751
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12999211 · 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
•
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE
•
SCREW SURFACE TREATMENT: OXIDE
•
THREAD CLASS: 2A A
•
THREAD DIRECTION: RIGHT-HAND
•
INTERNAL DRIVE STYLE: SLOT
•
THREAD LENGTH: 0.179 INCHES MAXIMUM IN
•
THREAD QUANTITY PER INCH: 72
•
HEAD DIAMETER: 0.156 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE
SCREW SURFACE TREATMENTOXIDE
THREAD CLASS2A A
THREAD DIRECTIONRIGHT-HAND
INTERNAL DRIVE STYLESLOT
THREAD LENGTH0.179 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH72
HEAD DIAMETER0.156 INCHES NOMINAL IN
HEAD STYLEFILLISTER
NOMINAL THREAD DIAMETER0.073 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
23069InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12999211?
12999211 is a PLUNGER,DETENT.
What parts can replace 12999211?
There is 1 known substitute for 12999211: 23069. Substitute compatibility should be verified for your specific system.
What is the NSN for 12999211?
12999211 is cataloged in the Federal Logistics Information System under NSN 5305-00-958-7751. 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: September 2026