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1128BM42091-13 — PIN,SHOULDER,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1128BM42091-13: PIN,SHOULDER,HEADLESS.

The PIN,SHOULDER,HEADLESS is a the manufacturer industrial component. Key specifications include shank_length: 0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN, overall_length: 1.733 INCHES MINIMUM AND 1.765 INCHES MAXIMUM IN, shank_diameter: 0.250 INCHES NOMINAL IN, surface_finish: 125.000 MICROINCHES OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-482-4221, 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
1128BM42091-13
NSN: 5315-00-482-4221
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 79RG9 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
shank_length0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
thread_class3A A
thread_length0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
overall_length1.733 INCHES MINIMUM AND 1.765 INCHES MAXIMUM IN
shank_diameter0.250 INCHES NOMINAL IN
surface_finish125.000 MICROINCHES OVERALL
first_end_styleCHAMFERED
second_end_styleCHAMFERED
style_designatorSHOULDER
thread_directionRIGHT-HAND
shoulder_diameter0.3739 INCHES MINIMUM AND 0.3744 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
NSN5315-00-482-4221
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1128BM42091-13 · 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
•
SHANK DIAMETER: 0.250 INCHES NOMINAL IN
•
SURFACE FINISH: 125.000 MICROINCHES OVERALL
•
FIRST END TAPER LENGTH: 0.031 INCHES NOMINAL IN
•
FIRST END LOCATION: BOTH ENDS
•
SECOND END TAPER ANGLE: 10.0 DEGREES NOMINAL
•
HOLE ARRANGEMENT STYLE: DRILLED SHANK THREADED PIN
•
THREAD LENGTH: 0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
•
FIRST END STYLE: CHAMFERED
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.250 INCHES NOMINAL IN
SURFACE FINISH125.000 MICROINCHES OVERALL
FIRST END TAPER LENGTH0.031 INCHES NOMINAL IN
FIRST END LOCATIONBOTH ENDS
SECOND END TAPER ANGLE10.0 DEGREES NOMINAL
HOLE ARRANGEMENT STYLEDRILLED SHANK THREADED PIN
THREAD LENGTH0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
FIRST END STYLECHAMFERED
FIRST HOLE DIAMETER0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN
SHANK LENGTH0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM 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 1128BM42091-13?
1128BM42091-13 is a PIN,SHOULDER,HEADLESS.
What is the NSN for 1128BM42091-13?
1128BM42091-13 is cataloged in the U.S. Government catalog under NSN 5315-00-482-4221. 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.