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121401 — PACKING,PREFORMED

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

121401: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include temp_rating: 550.0 FAHRENHEIT DEGF, peripheral_diameter: 0.297 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, center_hole_diameter: 0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN, cross-sectional_height: 0.172 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-012-1401, 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
121401
NSN: 5306-00-012-1401
NIINs: 000121401, 001156837, 001516946, 007651996
FSC: 5306 — Bolts
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
temp_rating550.0 FAHRENHEIT DEGF
peripheral_diameter0.297 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
center_hole_diameter0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
cross-sectional_height0.172 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
NSN5306-00-012-1401
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 121401 · 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
•
NECK LENGTH: 0.313 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.313 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
•
FASTENER LENGTH: 7.312 INCHES MINIMUM AND 7.688 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 1.750 INCHES MINIMUM IN
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HARDNESS RATING: 95.0 ROCKWELL B MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE GR 1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.625 INCHES IN
TECHNICAL CHARACTERISTICS
NECK LENGTH0.313 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
HEAD HEIGHT0.313 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
FASTENER LENGTH7.312 INCHES MINIMUM AND 7.688 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
THREAD LENGTH1.750 INCHES MINIMUM IN
HARDNESS RATING95.0 ROCKWELL B MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE GR 1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.625 INCHES IN
HEAD STYLEBUTTON
THREAD DIRECTIONRIGHT-HAND
SUBSTITUTES & CROSS-REFERENCES 1
MS35751-169Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 121401?
121401 is a PACKING,PREFORMED.
What parts can replace 121401?
There is 1 known substitute for 121401: MS35751-169. Substitute compatibility should be verified for your specific system.
What is the NSN for 121401?
121401 is cataloged in the U.S. Government catalog under NSN 5306-00-012-1401. 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.