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Technical Data Sheet

PL-999F0661 PIECE 62 — Technical Data Sheet

✓ 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 NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY R-405 OVERALL, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND, nominal_thread_size: 0.625 INCHES IN, thread_quantity_per_inch: 11, material_document_and_classification: QQ-N-281,CL B FED SPEC 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 under NSN 5310-01-235-1186, 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
PL-999F0661 PIECE 62
NSN: 5310-01-235-1186
FSC: 5310
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
materialNICKEL ALLOY R-405 OVERALL
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
nominal_thread_size0.625 INCHES IN
thread_quantity_per_inch11
material_document_and_classificationQQ-N-281,CL B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5310-01-235-1186
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: PL-999F0661 PIECE 62 · 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
•
NOMINAL THREAD SIZE: 0.625 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 11
•
MATERIAL: NICKEL ALLOY R-405 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281,CL B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
NOMINAL THREAD SIZE0.625 INCHES IN
THREAD DIRECTIONRIGHT-HAND
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH11
MATERIALNICKEL ALLOY R-405 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281,CL B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
563-6404331-28InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
5/8-11UNC-3BInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
ESNA-09NE-108InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
U9NE-101InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
09NE101InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
PL-999F0661 PC6InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PL-999F0661 PIECE 62?
PL-999F0661 PIECE 62 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace PL-999F0661 PIECE 62?
There are 6 known substitutes for PL-999F0661 PIECE 62: 563-6404331-28, 5/8-11UNC-3B, ESNA-09NE-108 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for PL-999F0661 PIECE 62?
PL-999F0661 PIECE 62 is cataloged in the Federal Logistics Information System under NSN 5310-01-235-1186. This indicates validated use in U.S. government and defense supply chains.
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