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306374P12 — STUD,STEPPED

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

306374P12: STUD,STEPPED.

The STUD,STEPPED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8740, thread_class: 3A NUT THREAD A, thread_length: 0.670 INCHES MINIMUM AND 0.690 INCHES MAXIMUM NUT THREAD IN, overall_length: 1.800 INCHES NOMINAL IN, shank_diameter: 0.358 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN, hardness_rating: 34.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5307-00-579-3055, 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
306374P12
NSN: 5307-00-579-3055
FSC: 5307 — Studs
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL COMP 8740
thread_class3A NUT THREAD A
thread_length0.670 INCHES MINIMUM AND 0.690 INCHES MAXIMUM NUT THREAD IN
overall_length1.800 INCHES NOMINAL IN
shank_diameter0.358 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN
hardness_rating34.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
style_designatorSTEPPED
thread_directionRIGHT-HAND STUD THREAD
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.562 INCHES STUD THREAD IN
thread_pitch_diameters+0.5254 TO 0.5269 INCHES STUD THREAD IN
thread_quantity_per_inch20 NUT THREAD
NSN5307-00-579-3055
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 306374P12 · 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
•
SHANK DIAMETER: 0.358 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.670 INCHES MINIMUM AND 0.690 INCHES MAXIMUM NUT THREAD IN
•
HARDNESS RATING: 34.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: STEPPED
•
THREAD PITCH DIAMETERS: +0.5254 TO 0.5269 INCHES STUD THREAD IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.358 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN
THREAD LENGTH0.670 INCHES MINIMUM AND 0.690 INCHES MAXIMUM NUT THREAD IN
THREAD LENGTH0.700 INCHES MINIMUM AND 0.720 INCHES MAXIMUM STUD THREAD IN
HARDNESS RATING34.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORSTEPPED
THREAD PITCH DIAMETERS+0.5254 TO 0.5269 INCHES STUD THREAD IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6322 ASSN STD SINGLE MATERIAL RESPONSE
OVERALL LENGTH1.800 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD DIRECTIONRIGHT-HAND NUT THREAD
OTHER ITEMS IN FSC 5307 — Studs
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5307-00-000-6436 5307-00-001-1578 5307-00-001-1761 5307-00-001-2366 5307-00-001-4491 5307-00-001-4624 5307-00-001-4625
SUBSTITUTES & CROSS-REFERENCES 2
AS306374P12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
306374P-012Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 306374P12?
306374P12 is a STUD,STEPPED.
What parts can replace 306374P12?
There are 2 known substitutes for 306374P12: AS306374P12, 306374P-012. Substitute compatibility should be verified for your specific system.
What is the NSN for 306374P12?
306374P12 is cataloged in the U.S. Government catalog under NSN 5307-00-579-3055. 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.