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Technical Data Sheet
1155F20 PIECE 115 ✓ 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 material: STEEL CORROSION RESISTING OVERALL, hole_diameter: 0.601 INCHES MINIMUM AND 0.616 INCHES MAXIMUM IN, heat_treatment: ANNEALED, outside_diameter: 0.812 INCHES MINIMUM AND 0.827 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.042 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-103-8840, 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
1155F20 PIECE 115
NSN: 5310-01-103-8840
FSC: 5310
CAGE: 94259 — FLUOR MARINE PROPULSION, LLC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter0.601 INCHES MINIMUM AND 0.616 INCHES MAXIMUM IN
heat_treatmentANNEALED
outside_diameter0.812 INCHES MINIMUM AND 0.827 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.042 INCHES NOMINAL IN
external_key_quantity11
special_test_featuresSPECIAL QUALITY CONTROL TESTING
external_prebent_key_width0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
internal_prebent_key_width0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
internal_prebent_key_length0.062 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
departure_from_cited_documentAS MODIFIED BY MATERIAL
NSN5310-01-103-8840
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1155F20 PIECE 115 · 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
EXTERNAL KEY QUANTITY: 11
INTERNAL PREBENT KEY LENGTH: 0.062 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
MATERIAL: STEEL CORROSION RESISTING OVERALL
STYLE DESIGNATOR: KEY
INTERNAL PREBENT KEY WIDTH: 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS: 1.0935 INCHES MINIMUM AND 1.1560 INCHES MAXIMUM IN
CRITICALITY CODE JUSTIFICATION: ZZZY
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED BY MATERIAL
TECHNICAL CHARACTERISTICS (FLIS)
EXTERNAL KEY QUANTITY11
INTERNAL PREBENT KEY LENGTH0.062 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
MATERIALSTEEL CORROSION RESISTING OVERALL
STYLE DESIGNATORKEY
INTERNAL PREBENT KEY WIDTH0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS1.0935 INCHES MINIMUM AND 1.1560 INCHES MAXIMUM IN
CRITICALITY CODE JUSTIFICATIONZZZY
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY MATERIAL
SPECIAL TEST FEATURESSPECIAL QUALITY CONTROL TESTING
TEST DATA DOCUMENT81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
112T389Interchangeable
interchangeable cross-reference
interchangeable
236-1017P3Interchangeable
interchangeable cross-reference
interchangeable
W02Interchangeable
interchangeable cross-reference
interchangeable
N9087PC26Interchangeable
interchangeable cross-reference
interchangeable
HN39PC114Interchangeable
interchangeable cross-reference
interchangeable
PB19091Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1155F20 PIECE 115?
1155F20 PIECE 115 is a WASHER,KEY.
What parts can replace 1155F20 PIECE 115?
There are 20 known substitutes for 1155F20 PIECE 115: 112T389, 236-1017P3, W02 and 17 more. Substitute compatibility should be verified for your specific system.
Is 1155F20 PIECE 115 still available?
1155F20 PIECE 115 is currently cancelled.
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