PartsTable
Technical Data Sheet
1203-91 ✓ 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

SOCKET,PLUG-IN ELECTRONIC COMPON. Key specifications include material: ALUMINUM, thickness: 0.036 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN, body_width: 1.100 INCHES NOMINAL IN, body_height: 0.630 INCHES MAXIMUM IN, body_length: 2.200 INCHES NOMINAL IN, hole_diameter: 0.214 INCHES MINIMUM AND 0.227 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-012-0391, 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
1203-91
NSN: 5310-00-012-0391
FSC: 5310
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialALUMINUM
thickness0.036 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
body_width1.100 INCHES NOMINAL IN
body_height0.630 INCHES MAXIMUM IN
body_length2.200 INCHES NOMINAL IN
hole_diameter0.214 INCHES MINIMUM AND 0.227 INCHES MAXIMUM IN
inclosure_typeFULLY INCLOSED
mounting_methodTHREADED HOLE(S) SINGLE GROUP
frequency_rating400.0 HERTZ NOMINAL SINGLE COMPONENT
overall_diameter0.495 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
nominal_thread_size0.086 INCHES SINGLE GROUP IN
NSN5310-00-012-0391
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1203-91 · 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
CENTER HOLE SHAPE STYLE: ROUND
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NONDEFINITIVE SPEC/STD DATA: A TYPE
MATERIAL: STEEL COMP 1010 OVERALL
DEPARTURE FROM CITED DOCUMENT: AS MOD BY SURF
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
THICKNESS: 0.049 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE SHAPE STYLEROUND
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NONDEFINITIVE SPEC/STD DATAA TYPE
MATERIALSTEEL COMP 1010 OVERALL
DEPARTURE FROM CITED DOCUMENTAS MOD BY SURF
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
THICKNESS0.049 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.218 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
P103Interchangeable
interchangeable cross-reference
interchangeable
347462Interchangeable
interchangeable cross-reference
interchangeable
BEBX1M1Interchangeable
interchangeable cross-reference
interchangeable
FFW92TYPEAGRADE1CLASSASIZE10Interchangeable
interchangeable cross-reference
interchangeable
5310PL0656425Interchangeable
interchangeable cross-reference
interchangeable
MS27183-42Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1203-91?
1203-91 is a SOCKET,PLUG-IN ELECTRONIC COMPON.
What parts can replace 1203-91?
There are 27 known substitutes for 1203-91: P103, 347462, BEBX1M1 and 24 more. Substitute compatibility should be verified for your specific system.
Is 1203-91 still available?
1203-91 is currently cancelled.
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