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PartsTable / COMPONENT / H-1143-HPC9
H-1143-HPC9 ✓ 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,LOCK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, hole_diameter: 0.635 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN, hardness_rating: 90.0 ROCKWELL B MINIMUM, outside_diameter: 1.079 INCHES MAXIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: CADMIUM OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-187-2417, 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
H-1143-HPC9
NSN: 5310-00-187-2417
FSC: 5310
CAGE: 92772 — THE WHITMOR CO. INC. DIV THE WHITMOR COMAPNY INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
hole_diameter0.635 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN
hardness_rating90.0 ROCKWELL B MINIMUM
outside_diameter1.079 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentCADMIUM OVERALL
material_thickness0.156 INCHES MINIMUM IN
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-187-2417
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: H-1143-HPC9 · 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
•
OUTSIDE DIAMETER: 1.079 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
MATERIAL: COPPER ALLOY OVERALL
•
HOLE DIAMETER: 0.636 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.156 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 90.0 ROCKWELL B MINIMUM
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER1.079 INCHES MAXIMUM IN
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
MATERIALCOPPER ALLOY OVERALL
HOLE DIAMETER0.636 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN
MATERIAL THICKNESS0.156 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING90.0 ROCKWELL B MINIMUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
2HS104Interchangeable
interchangeable cross-reference
interchangeable
AN935B616LInterchangeable
interchangeable cross-reference
interchangeable
B27-1Interchangeable
interchangeable cross-reference
interchangeable
517045Interchangeable
interchangeable cross-reference
interchangeable
FF-W-84AInterchangeable
interchangeable cross-reference
interchangeable
1A112Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H-1143-HPC9?
H-1143-HPC9 is a WASHER,LOCK.
What parts can replace H-1143-HPC9?
There are 21 known substitutes for H-1143-HPC9: 2HS104, AN935B616L, B27-1 and 18 more. Substitute compatibility should be verified for your specific system.
Is H-1143-HPC9 still available?
H-1143-HPC9 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026