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184166-4 — STUD,SHOULDERED AND STEPPED

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

184166-4: STUD,SHOULDERED AND STEPPED.

The STUD,SHOULDERED AND STEPPED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 416, thread_class: 3A NUT THREAD A, thread_length: 0.390 INCHES MINIMUM AND 0.410 INCHES MAXIMUM NUT THREAD IN, overall_length: 1.225 INCHES NOMINAL IN, shoulder_length: 0.080 INCHES NOMINAL IN, style_designator: SHOULDERED AND STEPPED. This part is cataloged in the U.S.

Government catalog under NSN 5307-00-276-2495, 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
184166-4
NSN: 5307-00-276-2495
FSC: 5307 — Studs
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 416
thread_class3A NUT THREAD A
thread_length0.390 INCHES MINIMUM AND 0.410 INCHES MAXIMUM NUT THREAD IN
overall_length1.225 INCHES NOMINAL IN
shoulder_length0.080 INCHES NOMINAL IN
style_designatorSHOULDERED AND STEPPED
thread_directionRIGHT-HAND NUT THREAD
shoulder_diameter0.435 INCHES NOMINAL IN
nominal_thread_size0.250 INCHES NUT THREAD IN
nut_end_shank_length0.433 INCHES NOMINAL IN
nut_end_shank_diameter0.250 INCHES NOMINAL IN
thread_quantity_per_inch20 NUT THREAD
NSN5307-00-276-2495
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 184166-4 · 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: 0.250 INCHES NOMINAL IN
•
THREAD LENGTH: 0.250 INCHES NOMINAL STUD THREAD IN
•
STYLE DESIGNATOR: SHOULDERED AND STEPPED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-853,CL 6,TY A MIL SPEC SINGLE MATERIAL RESPONSE
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
TECHNICAL CHARACTERISTICS
NUT END SHANK DIAMETER0.250 INCHES NOMINAL IN
THREAD LENGTH0.250 INCHES NOMINAL STUD THREAD IN
THREAD LENGTH0.390 INCHES MINIMUM AND 0.410 INCHES MAXIMUM NUT THREAD IN
STYLE DESIGNATORSHOULDERED AND STEPPED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-853,CL 6,TY A MIL SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH1.225 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD DIRECTIONRIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE0.250 INCHES NUT THREAD IN
SHOULDER DIAMETER0.435 INCHES NOMINAL 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 184166-4?
184166-4 is a STUD,SHOULDERED AND STEPPED.
What is the NSN for 184166-4?
184166-4 is cataloged in the U.S. Government catalog under NSN 5307-00-276-2495. 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.