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183821 — REGULATOR,TENSION,CABLE,AIRCRAFT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

183821: REGULATOR,TENSION,CABLE,AIRCRAFT.

REGULATOR,TENSION,CABLE,AIRCRAFT. Key specifications include end_item_identification: C130 ACFT. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-028-4001, 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
183821
NSN: 5310-00-028-4001
NIINs: 000284001, 012160543
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
end_item_identificationC130 ACFT
NSN5310-00-028-4001
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 183821 · 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
•
WIDTH ACROSS FLATS: 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
•
THREAD SERIES: UNF
•
PRECIOUS MATERIAL: SILVER
•
HARDNESS RATING: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.438 INCHES IN
•
NUT HEIGHT: 0.380 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
TYPICAL APPLICATIONS
  • Server Internal Cabling
  • Data Center Cable Infrastructure
  • SAS/SATA Drive Connectivity
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
THREAD SERIESUNF
PRECIOUS MATERIALSILVER
HARDNESS RATING35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.438 INCHES IN
NUT HEIGHT0.380 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
SURFACE TREATMENTSILVER OVERALL
NUT STYLEHEXAGON
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 183821?
183821 is a REGULATOR,TENSION,CABLE,AIRCRAFT.
What is the NSN for 183821?
183821 is cataloged in the U.S. Government catalog under NSN 5310-00-028-4001. 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.