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PartsTable / COMPONENT / PL999D0562 PIECE 51
PL999D0562 PIECE 51 ✓ 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 KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 400 OVERALL, overall_width: 0.250 INCHES NOMINAL IN, overall_height: 0.250 INCHES NOMINAL IN, overall_length: 4.250 INCHES NOMINAL IN, style_designator: PLAIN, material_document_and_classification: ASTM B164 CL A ASSN STD SINGLE MATERIAL RESPONSE OR J032A FSCM 63857 MFR REF SINGLE MATERIAL RESPONSE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-211-0781, 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
PL999D0562 PIECE 51
NSN: 5315-01-211-0781
FSC: 5315
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
materialNICKEL ALLOY 400 OVERALL
overall_width0.250 INCHES NOMINAL IN
overall_height0.250 INCHES NOMINAL IN
overall_length4.250 INCHES NOMINAL IN
style_designatorPLAIN
material_document_and_classificationASTM B164 CL A ASSN STD SINGLE MATERIAL RESPONSE OR J032A FSCM 63857 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5315-01-211-0781
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: PL999D0562 PIECE 51 · 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: NICKEL ALLOY 400 OVERALL
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B164 CL A ASSN STD SINGLE MATERIAL RESPONSE OR J032A FSCM 63857 MFR REF SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALNICKEL ALLOY 400 OVERALL
OVERALL HEIGHT0.250 INCHES NOMINAL IN
OVERALL LENGTH4.250 INCHES NOMINAL IN
OVERALL WIDTH0.250 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B164 CL A ASSN STD SINGLE MATERIAL RESPONSE OR J032A FSCM 63857 MFR REF SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
149C028H01Interchangeable
interchangeable cross-reference
interchangeable
4-0SCBInterchangeable
interchangeable cross-reference
interchangeable
MILB55130/2Interchangeable
interchangeable cross-reference
interchangeable
N5-7Interchangeable
interchangeable cross-reference
interchangeable
57-0002Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PL999D0562 PIECE 51?
PL999D0562 PIECE 51 is a KEY,MACHINE.
What parts can replace PL999D0562 PIECE 51?
There are 5 known substitutes for PL999D0562 PIECE 51: 149C028H01, 4-0SCB, MILB55130/2 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for PL999D0562 PIECE 51?
PL999D0562 PIECE 51 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-211-0781. 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: July 2026