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581R985G01 — NUT ASSY,FLOATING SELF LOCKING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

581R985G01: NUT ASSY,FLOATING SELF LOCKING.

The NUT ASSY,FLOATING SELF LOCKING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5310-01-088-2588, 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
581R985G01
NSN: 5310-01-088-2588
FSC: 5310 — Nuts and Washers
CAGE: 97942 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)
SPECIFICATIONS
Part Number581R985G01
NSN5310-01-088-2588
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 581R985G01 · 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: NUT IS CARBON STEEL; ROCKWELL C22 TO 31; 0.210 IN. HIGH,0.340 IN. WD,0.525 IN. LG; SLEEVE IS CRES 304 QQ-S-766 0.099 IN. DP; PANEL GRIP THICKNESS0.031 TO 0.062 IN.; BRACKET IS QQ-S-700 COMP 1050 TO 1074 0.572 IN. LG; CADMIUM PLATE O/A; 0.1640-32 UNC-3B IN NUT; NUT REMOVEABLE IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONNUT IS CARBON STEEL; ROCKWELL C22 TO 31; 0.210 IN. HIGH,0.340 IN. WD,0.525 IN. LG; SLEEVE IS CRES 304 QQ-S-766 0.099 IN. DP; PANEL GRIP THICKNESS0.031 TO 0.062 IN.; BRACKET IS QQ-S-700 COMP 1050 TO 1074 0.572 IN. LG; CADMIUM PLATE O/A; 0.1640-32 UNC-3B IN NUT; NUT REMOVEABLE IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 1
FWM6010-8F-AReference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 581R985G01?
581R985G01 is a NUT ASSY,FLOATING SELF LOCKING.
What parts can replace 581R985G01?
There is 1 known substitute for 581R985G01: FWM6010-8F-A. Substitute compatibility should be verified for your specific system.
What is the NSN for 581R985G01?
581R985G01 is cataloged in the U.S. Government catalog under NSN 5310-01-088-2588. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.