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137243 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The SEMICONDUCTOR DEVICE,DIODE is a the manufacturer industrial component. Key specifications include width: 20.000 INCHES NOMINAL IN, length: 24.000 INCHES NOMINAL IN, material: PLASTIC POLYESTER, film_type: STILL PICTURE, base_color: CLEAR, usage_form: SHEET. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-187-1811, 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
137243
NSN: 5315-00-187-1811
FSC: 5315
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
width20.000 INCHES NOMINAL IN
length24.000 INCHES NOMINAL IN
materialPLASTIC POLYESTER
film_typeSTILL PICTURE
base_colorCLEAR
usage_formSHEET
film_subtypeCAMERA
emulsion_typeBLACK AND WHITE
precious_materialSILVER
reproduction_typePRINT
emulsion_sensitivityARTIFICIAL LIGHT
base_material_thickness0.0040 INCHES NOMINAL IN
NSN5315-00-187-1811
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 137243 · 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
•
STYLE DESIGNATOR: STANDARD
•
UNDERLOOP LENGTH: 2.000 INCHES NOMINAL IN
•
DIAMETER: 0.156 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
NONDEFINITIVE SPEC/STD DATA: B TYPE
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSTANDARD
UNDERLOOP LENGTH2.000 INCHES NOMINAL IN
DIAMETER0.156 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
NONDEFINITIVE SPEC/STD DATAB TYPE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
137243Interchangeable
interchangeable cross-reference
interchangeable
SD-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 137243?
137243 is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace 137243?
There are 2 known substitutes for 137243: 137243, SD-4. Substitute compatibility should be verified for your specific system.
What is the NSN for 137243?
137243 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-187-1811. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026