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R14PC78 — Technical Data Sheet

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— · 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 KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 400 OVERALL, overall_width: 0.312 INCHES NOMINAL IN, overall_height: 0.312 INCHES NOMINAL IN, overall_length: 0.875 INCHES NOMINAL IN, style_designator: PLAIN, starting_edge_shape: STRAIGHT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5315-00-132-8070, 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
R14PC78
NSN: 5315-00-132-8070
FSC: 5315
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
materialNICKEL ALLOY 400 OVERALL
overall_width0.312 INCHES NOMINAL IN
overall_height0.312 INCHES NOMINAL IN
overall_length0.875 INCHES NOMINAL IN
style_designatorPLAIN
starting_edge_shapeSTRAIGHT
material_document_and_classificationMIL-N-894 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-132-8070
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: R14PC78 · 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
•
STARTING EDGE SHAPE: STRAIGHT
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL: NICKEL ALLOY 400 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-N-894 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
OVERALL LENGTH0.875 INCHES NOMINAL IN
OVERALL HEIGHT0.312 INCHES NOMINAL IN
STARTING EDGE SHAPESTRAIGHT
STYLE DESIGNATORPLAIN
MATERIALNICKEL ALLOY 400 OVERALL
OVERALL WIDTH0.312 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-N-894 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
QQ-N-281DInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
A162242InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
11783InterchangeableGOVERNMENT REGISTRY
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10510P11InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
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569-4700-1189569PCSP14InterchangeableGOVERNMENT REGISTRY
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525-4700-87303REV1PCS37InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R14PC78?
R14PC78 is a KEY,MACHINE.
What parts can replace R14PC78?
There are 16 known substitutes for R14PC78: QQ-N-281D, A162242, 11783 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R14PC78?
R14PC78 is cataloged in the Federal Logistics Information System under NSN 5315-00-132-8070. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: October 2026