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3-1-3431 — FLANGE,OUTPUT BRASS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3-1-3431: FLANGE,OUTPUT BRASS.

The FLANGE,OUTPUT BRASS is a the manufacturer industrial component. Key specifications include height: 0.065 INCHES NOMINAL IN, diameter: 0.061 INCHES NOMINAL IN, material: COPPER ALLOY OVERALL, head_style: FLAT FILLISTER, hardness_rating: 82.0 ROCKWELL C MINIMUM AND 90.0 ROCKWELL C MAXIMUM OVERALL, style_designator: STRAIGHT. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-141-6489, 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
3-1-3431
NSN: 5315-00-141-6489
NIINs: 001416489, 011494937
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
height0.065 INCHES NOMINAL IN
diameter0.061 INCHES NOMINAL IN
materialCOPPER ALLOY OVERALL
head_styleFLAT FILLISTER
hardness_rating82.0 ROCKWELL C MINIMUM AND 90.0 ROCKWELL C MAXIMUM OVERALL
style_designatorSTRAIGHT
pin_head_diameter0.125 INCHES NOMINAL IN
under_head_length0.660 INCHES NOMINAL IN
material_document_and_classificationQQ-B-746 COMP A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-141-6489
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3-1-3431 · 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
•
UNDER HEAD LENGTH: 0.660 INCHES NOMINAL IN
•
HARDNESS RATING: 82.0 ROCKWELL C MINIMUM AND 90.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: STRAIGHT
•
PIN HEAD DIAMETER: 0.125 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-746 COMP A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
DIAMETER: 0.061 INCHES NOMINAL IN
•
HEAD STYLE: FLAT FILLISTER
•
HEIGHT: 0.065 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
UNDER HEAD LENGTH0.660 INCHES NOMINAL IN
HARDNESS RATING82.0 ROCKWELL C MINIMUM AND 90.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORSTRAIGHT
PIN HEAD DIAMETER0.125 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-746 COMP A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
DIAMETER0.061 INCHES NOMINAL IN
HEAD STYLEFLAT FILLISTER
HEIGHT0.065 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3-1-3431?
3-1-3431 is a FLANGE,OUTPUT BRASS.
What is the NSN for 3-1-3431?
3-1-3431 is cataloged in the U.S. Government catalog under NSN 5315-00-141-6489. 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.