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3186951 — LINE,RADIO FREQUENCY TRANSMISSIO

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3186951: LINE,RADIO FREQUENCY TRANSMISSIO.

LINE,RADIO FREQUENCY TRANSMISSIO. Key specifications include material: ALUMINUM, nut_style: SQUARE, nut_height: 0.312 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNF, conductor_size: 6 AWG. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-409-3068, 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
3186951
NSN: 5310-00-409-3068
NIINs: 004093068, 009165729
FSC: 5310 — Nuts and Washers
CAGE: 0ZWK8 — MOOG MILITARY AIRCRAFT LLC (USA)
SPECIFICATIONS
materialALUMINUM
nut_styleSQUARE
nut_height0.312 INCHES NOMINAL IN
thread_class3B
thread_seriesUNF
conductor_size6 AWG
overall_length2.120 INCHES IN
outside_diameter0.500 INCHES NOMINAL IN
thread_directionRIGHT-HAND
countersink_angle80.0 DEGREES MINIMUM AND 100.0 DEGREES MAXIMUM NUT
conductor_quantity1
width_across_flats0.300 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
NSN5310-00-409-3068
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3186951 · 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
•
WIDTH ACROSS FLATS: 0.300 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
•
BEARING SURFACE FINISH: 125.0 MICROINCHES
•
THREAD SERIES: UNF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
NUT HEIGHT: 0.312 INCHES NOMINAL IN
•
COUNTERSINK ANGLE: 80.0 DEGREES MINIMUM AND 100.0 DEGREES MAXIMUM NUT
•
NUT STYLE: SQUARE
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.300 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
BEARING SURFACE FINISH125.0 MICROINCHES
THREAD SERIESUNF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.190 INCHES IN
NUT HEIGHT0.312 INCHES NOMINAL IN
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 100.0 DEGREES MAXIMUM NUT
NUT STYLESQUARE
THREAD CLASS3B
THREAD QUANTITY PER INCH32
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 3186951?
3186951 is a LINE,RADIO FREQUENCY TRANSMISSIO.
What is the NSN for 3186951?
3186951 is cataloged in the U.S. Government catalog under NSN 5310-00-409-3068. 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.