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161401-1 — STUD,SHOULDERED AND STEPPED

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

161401-1: STUD,SHOULDERED AND STEPPED.

The STUD,SHOULDERED AND STEPPED is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 718, thread_class: 3A STUD THREAD A, thread_length: 0.620 INCHES MINIMUM AND 0.650 INCHES MAXIMUM STUD THREAD IN, overall_length: 6.050 INCHES MINIMUM AND 6.120 INCHES MAXIMUM IN, shoulder_length: 0.160 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN, style_designator: SHOULDERED AND STEPPED. This part is cataloged in the U.S.

Government catalog under NSN 5307-01-195-5182, 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
161401-1
NSN: 5307-01-195-5182
FSC: 5307 — Studs
CAGE: 55820 — RTX CORPORATION DIV PRATT & WHITNEY (USA)
SPECIFICATIONS
materialNICKEL ALLOY 718
thread_class3A STUD THREAD A
thread_length0.620 INCHES MINIMUM AND 0.650 INCHES MAXIMUM STUD THREAD IN
overall_length6.050 INCHES MINIMUM AND 6.120 INCHES MAXIMUM IN
shoulder_length0.160 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
style_designatorSHOULDERED AND STEPPED
thread_directionRIGHT-HAND STUD THREAD
shoulder_diameter0.600 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
nominal_thread_size0.437 INCHES STUD THREAD IN
nut_end_shank_length4.250 INCHES MINIMUM IN
distance_across_flats0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
nut_end_shank_diameter0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
NSN5307-01-195-5182
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 161401-1 · 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
•
NUT END SHANK DIAMETER: 0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.620 INCHES MINIMUM AND 0.650 INCHES MAXIMUM STUD THREAD IN
•
STYLE DESIGNATOR: SHOULDERED AND STEPPED
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5663 ASSN STD SINGLE MATERIAL RESPONSE
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
TECHNICAL CHARACTERISTICS
NUT END SHANK DIAMETER0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
THREAD LENGTH0.620 INCHES MINIMUM AND 0.650 INCHES MAXIMUM STUD THREAD IN
THREAD LENGTH1.180 INCHES MINIMUM AND 1.250 INCHES MAXIMUM NUT THREAD IN
STYLE DESIGNATORSHOULDERED AND STEPPED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5663 ASSN STD SINGLE MATERIAL RESPONSE
OVERALL LENGTH6.050 INCHES MINIMUM AND 6.120 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD DIRECTIONRIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE0.437 INCHES STUD THREAD IN
NOMINAL THREAD SIZE0.375 INCHES NUT 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

No substitute or cross-reference records for this part.

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 161401-1?
161401-1 is a STUD,SHOULDERED AND STEPPED.
What is the NSN for 161401-1?
161401-1 is cataloged in the U.S. Government catalog under NSN 5307-01-195-5182. 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.