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982B054557 — NUT,PLAIN,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

982B054557: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 360 OVERALL, nut_style: HEXAGONHEXAGON, thread_class: 2B2B, thread_series: UNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HANDRIGHT-HAND, surface_treatment: CADMIUM AND CADMIUM AND CHROMATE OVERALLCHROMATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-142-1185, 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
982B054557
NSN: 5310-01-142-1185
FSC: 5310 — Nuts and Washers
CAGE: 03956 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360 OVERALL
nut_styleHEXAGONHEXAGON
thread_class2B2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HANDRIGHT-HAND
surface_treatmentCADMIUM AND CADMIUM AND CHROMATE OVERALLCHROMATE OVERALL
width_across_flats0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
nominal_thread_size0.138 INCHES0.138 INCHES IN
thread_quantity_per_inch3232
material_document_and_classificationQQ-B-626,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALLQQ-B-626,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-142-1185
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 982B054557 · 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: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-626,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALLQQ-B-626,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HANDRIGHT-HAND
•
NOMINAL THREAD SIZE: 0.138 INCHES0.138 INCHES IN
•
SURFACE TREATMENT: CADMIUM AND CADMIUM AND CHROMATE OVERALLCHROMATE OVERALL
•
NUT STYLE: HEXAGONHEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALLQQ-B-626,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
NOMINAL THREAD SIZE0.138 INCHES0.138 INCHES IN
SURFACE TREATMENTCADMIUM AND CADMIUM AND CHROMATE OVERALLCHROMATE OVERALL
NUT STYLEHEXAGONHEXAGON
THREAD CLASS2B2B
THREAD QUANTITY PER INCH3232
SUBSTITUTES & CROSS-REFERENCES 1
1451ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 982B054557?
982B054557 is a NUT,PLAIN,HEXAGON.
What parts can replace 982B054557?
There is 1 known substitute for 982B054557: 1451A. Substitute compatibility should be verified for your specific system.
What is the NSN for 982B054557?
982B054557 is cataloged in the U.S. Government catalog under NSN 5310-01-142-1185. 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.