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3MFRA585-31T — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

3MFRA585-31T: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include grip_length: 1.928 INCHES MINIMUM AND 1.948 INCHES MAXIMUM IN, hardness_rating: 36.0 ROCKWELL C MAXIMUM AND 40.0 ROCKWELL C MINIMUM OVERALL, countersink_angle: 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM, surface_treatment: CADMIUM AND CHROMATE OVERALL, part_name_assigned_by_controlling_agency: NAVY SPECIAL PROJECT. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-381-9876, 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
3MFRA585-31T
NSN: 5305-00-381-9876
FSC: 5305 — Screws
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
grip_length1.928 INCHES MINIMUM AND 1.948 INCHES MAXIMUM IN
hardness_rating36.0 ROCKWELL C MAXIMUM AND 40.0 ROCKWELL C MINIMUM OVERALL
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
surface_treatmentCADMIUM AND CHROMATE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5305-00-381-9876
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3MFRA585-31T · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HARDNESS RATING: 36.0 ROCKWELL C MAXIMUM AND 40.0 ROCKWELL C MINIMUM OVERALL
•
GRIP LENGTH: 1.928 INCHES MINIMUM AND 1.948 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
COUNTERSINK ANGLE: 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
TECHNICAL CHARACTERISTICS
HARDNESS RATING36.0 ROCKWELL C MAXIMUM AND 40.0 ROCKWELL C MINIMUM OVERALL
GRIP LENGTH1.928 INCHES MINIMUM AND 1.948 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
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 3MFRA585-31T?
3MFRA585-31T is a SCREW,CLOSE TOLERANCE.
What is the NSN for 3MFRA585-31T?
3MFRA585-31T is cataloged in the U.S. Government catalog under NSN 5305-00-381-9876. 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.