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13012172 — WASHER,SPLIT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

13012172: WASHER,SPLIT.

The WASHER,SPLIT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, hole_diameter: 4.190 INCHES MINIMUM AND 4.290 INCHES MAXIMUM IN, outside_diameter: 8.740 INCHES NOMINAL IN, style_designator: SPLIT, material_thickness: 0.460 INCHES NOMINAL IN, distance_across_split_opening: 0.460 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-142-4738, 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
13012172
NSN: 5310-01-142-4738
FSC: 5310 — Nuts and Washers
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
hole_diameter4.190 INCHES MINIMUM AND 4.290 INCHES MAXIMUM IN
outside_diameter8.740 INCHES NOMINAL IN
style_designatorSPLIT
material_thickness0.460 INCHES NOMINAL IN
distance_across_split_opening0.460 INCHES MAXIMUM IN
material_document_and_classificationQQ-S-766,CONDITION A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-142-4738
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 13012172 · 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
•
DISTANCE ACROSS SPLIT OPENING: 0.460 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SPLIT
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-766,CONDITION A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 8.740 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.460 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 304 OVERALL
•
HOLE DIAMETER: 4.190 INCHES MINIMUM AND 4.290 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
DISTANCE ACROSS SPLIT OPENING0.460 INCHES MAXIMUM IN
STYLE DESIGNATORSPLIT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766,CONDITION A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER8.740 INCHES NOMINAL IN
MATERIAL THICKNESS0.460 INCHES NOMINAL IN
MATERIALSTEEL COMP 304 OVERALL
HOLE DIAMETER4.190 INCHES MINIMUM AND 4.290 INCHES MAXIMUM 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 13012172?
13012172 is a WASHER,SPLIT.
What is the NSN for 13012172?
13012172 is cataloged in the U.S. Government catalog under NSN 5310-01-142-4738. 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.