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1-140-161-01 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1-140-161-01: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OVERALL, hole_diameter: 1.9682 INCHES MINIMUM AND 1.9686 INCHES MAXIMUM IN, hardness_rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM, outside_diameter: 2.320 INCHES NOMINAL IN, style_designator: KEY, surface_treatment: OXIDE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-933-1370, 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
1-140-161-01
NSN: 5310-00-933-1370
FSC: 5310 — Nuts and Washers
CAGE: 99193 — HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL DIV AEROSPACE - PHOENIX (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OVERALL
hole_diameter1.9682 INCHES MINIMUM AND 1.9686 INCHES MAXIMUM IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
outside_diameter2.320 INCHES NOMINAL IN
style_designatorKEY
surface_treatmentOXIDE OVERALL
material_thickness0.205 INCHES NOMINAL IN
external_key_quantity4
end_item_identificationHELICOPTER, IROQUOIS UH-1;HELICOPTER, COBRA/TOW, AH SERIES
external_straight_key_width0.199 INCHES MINIMUM AND 0.201 INCHES MAXIMUM IN
overall_distance_including_keys2.539 INCHES MINIMUM AND 2.540 INCHES MAXIMUM IN
material_document_and_classificationAMS 6382 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-933-1370
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1-140-161-01 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
OVERALL DISTANCE INCLUDING KEYS: 2.539 INCHES MINIMUM AND 2.540 INCHES MAXIMUM IN
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6382 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 2.320 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.205 INCHES NOMINAL IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.199 INCHES MINIMUM AND 0.201 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
OVERALL DISTANCE INCLUDING KEYS2.539 INCHES MINIMUM AND 2.540 INCHES MAXIMUM IN
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6382 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER2.320 INCHES NOMINAL IN
MATERIAL THICKNESS0.205 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH0.199 INCHES MINIMUM AND 0.201 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY4
SURFACE TREATMENTOXIDE OVERALL
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1-140-161-01?
1-140-161-01 is a WASHER,KEY.
What is the NSN for 1-140-161-01?
1-140-161-01 is cataloged in the U.S. Government catalog under NSN 5310-00-933-1370. This indicates validated use in U.S. government and defense supply chains.
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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.