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91944A027 — WASHER SET,SPHERICA

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

91944A027: WASHER SET,SPHERICA.

The WASHER SET,SPHERICA is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, overall_height: 0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, overall_diameter: 0.437 INCHES NOMINAL IN, special_features: ID - .203 SELF ALIGNING SET, thread_size_and_series/type_designator: 10 UNIFIED NATIONAL COARSE (UNC), part_name_assigned_by_controlling_agency: NAVY SPECIAL PROJECT. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-539-7155, 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
91944A027
NSN: 5310-01-539-7155
FSC: 5310 — Nuts and Washers
CAGE: 2V507 — MCMASTER-CARR SUPPLY COMPANY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
overall_height0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
overall_diameter0.437 INCHES NOMINAL IN
special_featuresID - .203 SELF ALIGNING SET
thread_size_and_series/type_designator10 UNIFIED NATIONAL COARSE (UNC)
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5310-01-539-7155
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 91944A027 · 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
•
OVERALL DIAMETER: 0.437 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 10 UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
OVERALL DIAMETER0.437 INCHES NOMINAL IN
SPECIAL FEATURESID - .203 SELF ALIGNING SET
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
MATERIALSTEEL CORROSION RESISTING
THREAD SIZE AND SERIES/TYPE DESIGNATOR10 UNIFIED NATIONAL COARSE (UNC)
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91944A027?
91944A027 is a WASHER SET,SPHERICA.
What is the NSN for 91944A027?
91944A027 is cataloged in the U.S. Government catalog under NSN 5310-01-539-7155. 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.