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3-13781 — SUPPORT,STRUCTURAL COMPONENT,AIR

✓ Government record, cited
Sharp · NUT WASHER
PRODUCT OVERVIEW

3-13781: SUPPORT,STRUCTURAL COMPONENT,AIR.

SUPPORT,STRUCTURAL COMPONENT,AIR. Key specifications include end_item_identification: AIRCRFAT, T-38, part_name_assigned_by_controlling_agency: SUPPORT-SHAFT, CANOPY DOWN LOCK, FUS. STA.

204.8. This part is cataloged in the U.S. Government catalog under NSN 5315-00-066-9218, 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
3-13781
NSN: 5315-00-066-9218
NIINs: 000669218, 015034078, 015034084
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 66195 — SOLAR TURBINES INCORPORATED DBA SOLAR TURBINES INCORPORATED (USA)
SPECIFICATIONS
end_item_identificationAIRCRFAT, T-38
part_name_assigned_by_controlling_agencySUPPORT-SHAFT, CANOPY DOWN LOCK, FUS. STA. 204.8
NSN5315-00-066-9218
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3-13781 · Sharp ⚠ 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-13924,CL2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
STARTING EDGE SHAPE: ROUND
•
STYLE DESIGNATOR: PLAIN
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STARTING EDGE RADIUS: 0.015 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
•
SURFACE TREATMENT: OXIDE OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.1875 INCHES MINIMUM AND 0.1885 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924,CL2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
STARTING EDGE SHAPEROUND
STYLE DESIGNATORPLAIN
OVERALL LENGTH0.820 INCHES MINIMUM AND 0.840 INCHES MAXIMUM IN
OVERALL WIDTH0.1875 INCHES MINIMUM AND 0.1885 INCHES MAXIMUM IN
STARTING EDGE RADIUS0.015 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
SURFACE TREATMENTOXIDE OVERALL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3-13781?
3-13781 is a SUPPORT,STRUCTURAL COMPONENT,AIR manufactured by Sharp.
What is the NSN for 3-13781?
3-13781 is cataloged in the U.S. Government catalog under NSN 5315-00-066-9218. 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.