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4028971P9 — STUD,SHOULDERED AND STEPPED

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

4028971P9: STUD,SHOULDERED AND STEPPED.

The STUD,SHOULDERED AND STEPPED is a the manufacturer industrial component. Key specifications include material: STEEL, thread_class: 3A NUT THREAD A, thread_length: 0.323 INCHES MINIMUM AND 0.405 INCHES MAXIMUM NUT THREAD IN, overall_length: 1.125 INCHES NOMINAL IN, shoulder_length: 0.265 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN, style_designator: SHOULDERED AND STEPPED. This part is cataloged in the U.S.

Government catalog under NSN 5307-00-348-0239, 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
4028971P9
NSN: 5307-00-348-0239
FSC: 5307 — Studs
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL
thread_class3A NUT THREAD A
thread_length0.323 INCHES MINIMUM AND 0.405 INCHES MAXIMUM NUT THREAD IN
overall_length1.125 INCHES NOMINAL IN
shoulder_length0.265 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN
style_designatorSHOULDERED AND STEPPED
thread_directionRIGHT-HAND NUT THREAD
shoulder_diameter0.390 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN
nominal_thread_size0.250 INCHES STUD THREAD IN
nut_end_shank_diameter0.174 INCHES MAXIMUM IN
thread_pitch_diameters+0.2034 TO 0.2590 INCHES STUD THREAD IN
stud_end_shank_diameter0.164 INCHES NOMINAL IN
NSN5307-00-348-0239
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4028971P9 · 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
•
NUT END SHANK DIAMETER: 0.174 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.323 INCHES MINIMUM AND 0.405 INCHES MAXIMUM NUT THREAD IN
•
STYLE DESIGNATOR: SHOULDERED AND STEPPED
•
THREAD PITCH DIAMETERS: +0.2034 TO 0.2590 INCHES STUD THREAD IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 7481 ASSN STD SINGLE MATERIAL RESPONSE
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
TECHNICAL CHARACTERISTICS
NUT END SHANK DIAMETER0.174 INCHES MAXIMUM IN
THREAD LENGTH0.323 INCHES MINIMUM AND 0.405 INCHES MAXIMUM NUT THREAD IN
THREAD LENGTH0.346 INCHES MINIMUM AND 0.386 INCHES MAXIMUM STUD THREAD IN
STYLE DESIGNATORSHOULDERED AND STEPPED
THREAD PITCH DIAMETERS+0.2034 TO 0.2590 INCHES STUD THREAD IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 7481 ASSN STD SINGLE MATERIAL RESPONSE
OVERALL LENGTH1.125 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD DIRECTIONRIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE0.250 INCHES STUD THREAD IN
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 1
5307PL0896285Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4028971P9?
4028971P9 is a STUD,SHOULDERED AND STEPPED.
What parts can replace 4028971P9?
There is 1 known substitute for 4028971P9: 5307PL0896285. Substitute compatibility should be verified for your specific system.
What is the NSN for 4028971P9?
4028971P9 is cataloged in the U.S. Government catalog under NSN 5307-00-348-0239. 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.