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12271905 — WASHER,SHOULDERED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12271905: WASHER,SHOULDERED.

The WASHER,SHOULDERED is a the manufacturer industrial component. Key specifications include material: GLASS OVERALL, hole_diameter: 0.260 INCHES NOMINAL IN, shoulder_height: 0.030 INCHES NOMINAL IN, outside_diameter: 0.508 INCHES NOMINAL IN, special_features: EPOXY GLASS FABRIC PER L-P-509,TYPE IV,GRADE G10; USED ON XM1, style_designator: SHOULDERED. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-101-7043, 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
12271905
NSN: 5310-01-101-7043
FSC: 5310 — Nuts and Washers
CAGE: 19200 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV LOGISTICS RESEARCH AND ENGINEERING DIRECTORATE (USA)
SPECIFICATIONS
materialGLASS OVERALL
hole_diameter0.260 INCHES NOMINAL IN
shoulder_height0.030 INCHES NOMINAL IN
outside_diameter0.508 INCHES NOMINAL IN
special_featuresEPOXY GLASS FABRIC PER L-P-509,TYPE IV,GRADE G10; USED ON XM1
style_designatorSHOULDERED
shoulder_diameter0.338 INCHES NOMINAL IN
material_thickness0.040 INCHES NOMINAL IN
NSN5310-01-101-7043
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12271905 · 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
•
SHOULDER HEIGHT: 0.030 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SHOULDERED
•
OUTSIDE DIAMETER: 0.508 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.040 INCHES NOMINAL IN
•
SHOULDER DIAMETER: 0.338 INCHES NOMINAL IN
•
MATERIAL: GLASS OVERALL
•
HOLE DIAMETER: 0.260 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SHOULDER HEIGHT0.030 INCHES NOMINAL IN
STYLE DESIGNATORSHOULDERED
OUTSIDE DIAMETER0.508 INCHES NOMINAL IN
MATERIAL THICKNESS0.040 INCHES NOMINAL IN
SHOULDER DIAMETER0.338 INCHES NOMINAL IN
SPECIAL FEATURESEPOXY GLASS FABRIC PER L-P-509,TYPE IV,GRADE G10; USED ON XM1
MATERIALGLASS OVERALL
HOLE DIAMETER0.260 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
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 12271905?
12271905 is a WASHER,SHOULDERED.
What is the NSN for 12271905?
12271905 is cataloged in the U.S. Government catalog under NSN 5310-01-101-7043. 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.