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99637A183 — NUT,SLEEVE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

99637A183: NUT,SLEEVE.

The NUT,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: SLEEVE, nut_length: 0.380 INCHES NOMINAL IN, nut_diameter: 0.250 INCHES NOMINAL IN, thread_length: 0.310 INCHES NOMINAL OVERALL IN, thread_series: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-705-5481, 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
99637A183
NSN: 5310-01-705-5481
FSC: 5310 — Nuts and Washers
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleSLEEVE
nut_length0.380 INCHES NOMINAL IN
nut_diameter0.250 INCHES NOMINAL IN
thread_length0.310 INCHES NOMINAL OVERALL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
flange_diameter0.440 INCHES NOMINAL IN
flange_thickness0.120 INCHES NOMINAL IN
thread_directionRIGHT-HANDRIGHT-HAND
nominal_thread_size0.190 INCHES IN
cross-sectional_shapeROUND W/WRENCH FLATS FIRST END
end_item_identification01-680-2383
NSN5310-01-705-5481
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 99637A183 · 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
•
FLANGE DIAMETER: 0.440 INCHES NOMINAL IN
•
NUT LENGTH: 0.380 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.120 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD LENGTH: 0.310 INCHES NOMINAL OVERALL IN
•
THREAD DIRECTION: RIGHT-HANDRIGHT-HAND
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
NUT DIAMETER: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER0.440 INCHES NOMINAL IN
NUT LENGTH0.380 INCHES NOMINAL IN
FLANGE THICKNESS0.120 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD LENGTH0.310 INCHES NOMINAL OVERALL IN
THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
NOMINAL THREAD SIZE0.190 INCHES IN
NUT DIAMETER0.250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPEROUND W/WRENCH FLATS FIRST END
NUT STYLESLEEVE
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 1
11B5091886Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
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 99637A183?
99637A183 is a NUT,SLEEVE.
What parts can replace 99637A183?
There is 1 known substitute for 99637A183: 11B5091886. Substitute compatibility should be verified for your specific system.
What is the NSN for 99637A183?
99637A183 is cataloged in the U.S. Government catalog under NSN 5310-01-705-5481. 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.