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212851-1 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

212851-1: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: BUTTON, head_height: 0.122 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.440 INCHES NOMINAL IN, thread_length: 0.625 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-375-7142, 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
212851-1
NSN: 5305-01-375-7142
FSC: 5305 — Screws
CAGE: 41JV4 — ARTEMIS ELECTRONICS LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleBUTTON
head_height0.122 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.440 INCHES NOMINAL IN
thread_length0.625 INCHES NOMINAL IN
fastener_length0.625 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_across_flats0.156 INCHES NOMINAL IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.250 INCHES IN
thread_quantity_per_inch20
NSN5305-01-375-7142
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 212851-1 · 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
•
WIDTH ACROSS FLATS: 0.156 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.122 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.625 INCHES NOMINAL IN
•
THREAD LENGTH: 0.625 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: BS 2470 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: BUTTON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.156 INCHES NOMINAL IN
HEAD HEIGHT0.122 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN
FASTENER LENGTH0.625 INCHES NOMINAL IN
THREAD LENGTH0.625 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONBS 2470 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEBUTTON
THREAD DIRECTIONRIGHT-HAND
INTERNAL DRIVE STYLEHEXAGON
THREAD CLASS2A A
SUBSTITUTES & CROSS-REFERENCES 1
363561Same 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 212851-1?
212851-1 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 212851-1?
There is 1 known substitute for 212851-1: 363561. Substitute compatibility should be verified for your specific system.
What is the NSN for 212851-1?
212851-1 is cataloged in the U.S. Government catalog under NSN 5305-01-375-7142. 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.