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12446871-21 — INSERT,SCREW THREAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

12446871-21: INSERT,SCREW THREAD.

The INSERT,SCREW THREAD is a the manufacturer industrial component. Key specifications include length: 0.810 INCHES MINIMUM AND 0.846 INCHES MAXIMUM IN, material: STEEL COMP 1010 AND STEEL COMP 1008 OVERALL, slot_width: 0.3906 INCHES MINIMUM AND 0.3966 INCHES MAXIMUM IN, insert_size: 0.390, thread_class: 2B, style_designator: SLOTTED. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-628-5431, 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
12446871-21
NSN: 5325-01-628-5431
FSC: 5325 — Fastening Devices
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
length0.810 INCHES MINIMUM AND 0.846 INCHES MAXIMUM IN
materialSTEEL COMP 1010 AND STEEL COMP 1008 OVERALL
slot_width0.3906 INCHES MINIMUM AND 0.3966 INCHES MAXIMUM IN
insert_size0.390
thread_class2B
style_designatorSLOTTED
surface_treatmentTIN AND ZINC OVERALL
end_item_identification015449638
thread_quantity_per_inch20
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
distance_from_fin_to_insert_head0.380 INCHES MAXIMUM IN
NSN5325-01-628-5431
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12446871-21 · 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
•
LENGTH: 0.810 INCHES MINIMUM AND 0.846 INCHES MAXIMUM IN
•
INSERT SIZE: 0.390
•
STYLE DESIGNATOR: SLOTTED
•
SURFACE TREATMENT: TIN AND ZINC OVERALL
•
THREAD CLASS: 2B
•
THREAD QUANTITY PER INCH: 20
•
MATERIAL: STEEL COMP 1010 AND STEEL COMP 1008 OVERALL
TECHNICAL CHARACTERISTICS
LENGTH0.810 INCHES MINIMUM AND 0.846 INCHES MAXIMUM IN
INSERT SIZE0.390
STYLE DESIGNATORSLOTTED
SURFACE TREATMENTTIN AND ZINC OVERALL
THREAD CLASS2B
END ITEM IDENTIFICATION015449638
THREAD QUANTITY PER INCH20
MATERIALSTEEL COMP 1010 AND STEEL COMP 1008 OVERALL
DISTANCE FROM FIN TO INSERT HEAD0.380 INCHES MAXIMUM IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SUBSTITUTES & CROSS-REFERENCES 1
12446871Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12446871-21?
12446871-21 is a INSERT,SCREW THREAD.
What parts can replace 12446871-21?
There is 1 known substitute for 12446871-21: 12446871. Substitute compatibility should be verified for your specific system.
What is the NSN for 12446871-21?
12446871-21 is cataloged in the U.S. Government catalog under NSN 5325-01-628-5431. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.