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FIT7899-1 — NUT,SLEEVE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

FIT7899-1: NUT,SLEEVE.

The NUT,SLEEVE is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 NUT, nut_style: SLEEVE, nut_length: 0.426 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN, lubrication: DRY FILM LUBRICANT, nut_diameter: 0.185 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN, thread_class: 3B. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-507-2166, 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
FIT7899-1
NSN: 5310-01-507-2166
FSC: 5310 — Nuts and Washers
CAGE: 58998 — FASTENER INNOVATION TECHNOLOGY, INC. DBA F I T (USA)
SPECIFICATIONS
materialIRON ALLOY 660 NUT
nut_styleSLEEVE
nut_length0.426 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN
lubricationDRY FILM LUBRICANT
nut_diameter0.185 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN
thread_class3B
thread_length0.311 INCHES NOMINAL OVERALL IN
thread_seriesUNJC
flange_diameter0.306 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
flange_thickness0.035 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE NUT
NSN5310-01-507-2166
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: FIT7899-1 · 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
•
LUBRICATION: DRY FILM LUBRICANT
•
FLANGE DIAMETER: 0.306 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
•
NUT LENGTH: 0.426 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS-QQ-P-35, TYPE II ASSN STD SINGLE TREATMENT RESPONSE NUT
•
FLANGE THICKNESS: 0.035 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
•
THREAD SERIES: UNJC
•
THREAD LENGTH: 0.311 INCHES NOMINAL OVERALL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE NUT
TECHNICAL CHARACTERISTICS
LUBRICATIONDRY FILM LUBRICANT
FLANGE DIAMETER0.306 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
NUT LENGTH0.426 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS-QQ-P-35, TYPE II ASSN STD SINGLE TREATMENT RESPONSE NUT
FLANGE THICKNESS0.035 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
THREAD SERIESUNJC
THREAD LENGTH0.311 INCHES NOMINAL OVERALL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5737 ASSN STD SINGLE MATERIAL RESPONSE NUT
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.138 INCHES 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
3D0331-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is FIT7899-1?
FIT7899-1 is a NUT,SLEEVE.
What parts can replace FIT7899-1?
There is 1 known substitute for FIT7899-1: 3D0331-1. Substitute compatibility should be verified for your specific system.
What is the NSN for FIT7899-1?
FIT7899-1 is cataloged in the U.S. Government catalog under NSN 5310-01-507-2166. 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.