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272B5051031-1 — PIN,TAPERED,THREADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

272B5051031-1: PIN,TAPERED,THREADED.

The PIN,TAPERED,THREADED is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include taper: 0.190 PER FOOT IN INCHES, material: STEEL COMP 4140 OVERALL, taper_length: 0.844 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 1.000 INCHES NOMINAL IN, hardness_rating: 34.0 ROCKWELL C MAXIMUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-566-9934, 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
272B5051031-1
NSN: 5315-00-566-9934
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 38597 — LOCKHEED MARTIN CORPORATION DIV ROTARY AND MISSION SYSTEMS (USA)
SPECIFICATIONS
taper0.190 PER FOOT IN INCHES
materialSTEEL COMP 4140 OVERALL
taper_length0.844 INCHES NOMINAL IN
thread_class2A A
thread_length1.000 INCHES NOMINAL IN
hardness_rating34.0 ROCKWELL C MAXIMUM OVERALL
style_designatorTHREADED AT SMALL END
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
first_hole_diameter0.067 INCHES NOMINAL IN
nominal_thread_size0.250 INCHES IN
taper_major_diameter0.371 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN
NSN5315-00-566-9934
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 272B5051031-1 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HOLE ARRANGEMENT STYLE: ONE END DRILLED
•
THREAD LENGTH: 1.000 INCHES NOMINAL IN
•
FIRST HOLE DIAMETER: 0.067 INCHES NOMINAL IN
•
TAPER MINOR DIAMETER: 0.250 INCHES NOMINAL IN
•
HARDNESS RATING: 34.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: THREADED AT SMALL END
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5626,COND F MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
TAPER MAJOR DIAMETER: 0.371 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS
HOLE ARRANGEMENT STYLEONE END DRILLED
THREAD LENGTH1.000 INCHES NOMINAL IN
FIRST HOLE DIAMETER0.067 INCHES NOMINAL IN
TAPER MINOR DIAMETER0.250 INCHES NOMINAL IN
HARDNESS RATING34.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORTHREADED AT SMALL END
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5626,COND F MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
TAPER MAJOR DIAMETER0.371 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.250 INCHES IN
OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5315-00-000-1037 5315-00-000-1067 5315-00-000-1245 5315-00-000-1372 5315-00-000-1412 5315-00-001-1571 5315-00-001-1572 5315-00-001-1602
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 272B5051031-1?
272B5051031-1 is a PIN,TAPERED,THREADED.
What is the NSN for 272B5051031-1?
272B5051031-1 is cataloged in the U.S. Government catalog under NSN 5315-00-566-9934. 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.