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MS21244-7 — NUT,PLAIN,ASSEMBLED WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MS21244-7: NUT,PLAIN,ASSEMBLED WASHER.

The NUT,PLAIN,ASSEMBLED WASHER is a the manufacturer industrial component. Key specifications include special_features: LOC: SLIDING FAIRING ROLLER STUD-REMOVAL/INSTALLATION, supplementary_features: TECHNICAL MAINTENANCE MANUAL: 54-32-02, end_item_identification: SIKORSKY HELICOPTER MODEL S-92A A, part_name_assigned_by_controlling_agency: NUT. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-027-2013, 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
MS21244-7
NSN: 5310-01-027-2013
NIINs: 010272013, 016662868
FSC: 5310 — Nuts and Washers
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
special_featuresLOC: SLIDING FAIRING ROLLER STUD-REMOVAL/INSTALLATION
supplementary_featuresTECHNICAL MAINTENANCE MANUAL: 54-32-02
end_item_identificationSIKORSKY HELICOPTER MODEL S-92A A
part_name_assigned_by_controlling_agencyNUT
NSN5310-01-027-2013
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS21244-7 · 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
•
WASHER OUTSIDE DIAMETER: 0.755 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN
•
BEARING SURFACE FINISH: 125.0 MICROINCHES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE WASHER
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
TEMP RATING: 450.0 FAHRENHEIT MAXIMUM DEGF
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.473 INCHES MINIMUM AND 0.513 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER0.755 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN
BEARING SURFACE FINISH125.0 MICROINCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE WASHER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE NUT
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING450.0 FAHRENHEIT MAXIMUM DEGF
NUT COUNTERBORE DEPTH0.249 INCHES MINIMUM AND 0.269 INCHES MAXIMUM NUT IN
THREAD DIRECTIONRIGHT-HAND
SUBSTITUTES & CROSS-REFERENCES 1
9770-7Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 MS21244-7?
MS21244-7 is a NUT,PLAIN,ASSEMBLED WASHER.
What parts can replace MS21244-7?
There is 1 known substitute for MS21244-7: 9770-7. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21244-7?
MS21244-7 is cataloged in the U.S. Government catalog under NSN 5310-01-027-2013. This indicates validated use in U.S. government and defense supply chains.
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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.