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3F31992-101 — NUT,SLEEVE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3F31992-101: NUT,SLEEVE.

The NUT,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, nut_style: SLEEVE, nut_length: 0.620 INCHES NOMINAL IN, nut_diameter: 0.303 INCHES MINIMUM AND 0.309 INCHES MAXIMUM IN, thread_class: 3B, thread_series: UNF. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-087-0303, 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
3F31992-101
NSN: 5310-01-087-0303
FSC: 5310 — Nuts and Washers
CAGE: 8T119 — G M J MACHINE CO, INC DIV G.M.J. MACHINE COMPANY, INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
nut_styleSLEEVE
nut_length0.620 INCHES NOMINAL IN
nut_diameter0.303 INCHES MINIMUM AND 0.309 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNF
flange_thickness0.060 INCHES NOMINAL IN
thread_directionRIGHT-HAND
nominal_thread_size0.190 INCHES IN
cross-sectional_shapeROUND NUT
thread_quantity_per_inch32
flange_width_across_flats0.625 INCHES NOMINAL IN
NSN5310-01-087-0303
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3F31992-101 · 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
•
FLANGE WIDTH ACROSS FLATS: 0.625 INCHES NOMINAL IN
•
NUT LENGTH: 0.620 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.060 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6758,COND F4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
NUT DIAMETER: 0.303 INCHES MINIMUM AND 0.309 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FLANGE WIDTH ACROSS FLATS0.625 INCHES NOMINAL IN
NUT LENGTH0.620 INCHES NOMINAL IN
FLANGE THICKNESS0.060 INCHES NOMINAL IN
THREAD SERIESUNF
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758,COND F4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.190 INCHES IN
NUT DIAMETER0.303 INCHES MINIMUM AND 0.309 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPEHEXAGONAL FLANGE
CROSS-SECTIONAL SHAPEROUND NUT
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3F31992-101?
3F31992-101 is a NUT,SLEEVE.
What is the NSN for 3F31992-101?
3F31992-101 is cataloged in the U.S. Government catalog under NSN 5310-01-087-0303. 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.