PartsTable
Technical Data Sheet
09-20048 ✓ Verified by PartsTable
· NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,KEY is a the manufacturer industrial component. Key specifications include hole_diameter: 3.582 INCHES MINIMUM AND 3.612 INCHES MAXIMUM IN, hardness_rating: 50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM, outside_diameter: 4.281 INCHES MINIMUM AND 4.326 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.088 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN, external_key_quantity: 19. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-186-0977, 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
09-20048
NSN: 5310-00-186-0977
FSC: 5310
CAGE: 1QUF0 — KOLBERG-PIONEER, INC (USA)
SPECIFICATIONS
hole_diameter3.582 INCHES MINIMUM AND 3.612 INCHES MAXIMUM IN
hardness_rating50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
outside_diameter4.281 INCHES MINIMUM AND 4.326 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.088 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
external_key_quantity19
external_prebent_key_width0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
internal_prebent_key_width0.313 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN
internal_prebent_key_length0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
overall_distance_including_keys4.938 INCHES MAXIMUM IN
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
NSN5310-00-186-0977
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 09-20048 · 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
MATERIAL: STEEL COMP 1005 OR STEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1025 OR STEEL COMP 1030 OR STEEL COMP 1035 OVERALL
STYLE DESIGNATOR: KEY
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
HOLE DIAMETER: 3.582 INCHES MINIMUM AND 3.612 INCHES MAXIMUM IN
EXTERNAL PREBENT KEY WIDTH: 0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
HARDNESS RATING: 50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
INTERNAL PREBENT KEY LENGTH: 0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY: 19
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 1005 OR STEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1025 OR STEEL COMP 1030 OR STEEL COMP 1035 OVERALL
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
HOLE DIAMETER3.582 INCHES MINIMUM AND 3.612 INCHES MAXIMUM IN
EXTERNAL PREBENT KEY WIDTH0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
HARDNESS RATING50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
INTERNAL PREBENT KEY LENGTH0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY19
END ITEM IDENTIFICATIONW/S:SUPPLY CLASS AOE; STREAM (STD, TENSIONED REPLENISHMENT AT SEA METHOD); FMS-KNOX CLASS FF; WHICBEY ISLAND CLASS LSD; SYSTEMS, JP-5 AVIATION FUELS; TARAWA CLASS LHA; NIMITZ CLASS CVN; TRAILER, SEMI (M860A1)
MATERIAL THICKNESS0.088 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
W-18Interchangeable
interchangeable cross-reference
interchangeable
MIL-T-13291TY1CLCInterchangeable
interchangeable cross-reference
interchangeable
10-20Interchangeable
interchangeable cross-reference
interchangeable
C77Interchangeable
interchangeable cross-reference
interchangeable
WS506Interchangeable
interchangeable cross-reference
interchangeable
501033Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 09-20048?
09-20048 is a WASHER,KEY.
What parts can replace 09-20048?
There are 19 known substitutes for 09-20048: W-18, MIL-T-13291TY1CLC, 10-20 and 16 more. Substitute compatibility should be verified for your specific system.
Is 09-20048 still available?
09-20048 is currently cancelled.
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