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797-7990-001 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

797-7990-001: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL COMP 631 OVERALL, hole_diameter: 1.933 INCHES MINIMUM AND 1.933 INCHES MINIMUM AND 1.946 INCHES MAXIMUM1.946 INCHES MAXIMUM IN, overall_height: 0.269 INCHES MINIMUM AND 0.269 INCHES MINIMUM AND 0.289 INCHES MAXIMUM0.289 INCHES MAXIMUM IN, outside_diameter: 2.236 INCHES MINIMUM AND 2.236 INCHES MINIMUM AND 2.252 INCHES MAXIMUM2.252 INCHES MAXIMUM IN, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.040 INCHES MINIMUM AND 0.040 INCHES MINIMUM AND 0.056 INCHES MAXIMUM0.056 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-078-2371, 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
797-7990-001
NSN: 5310-01-078-2371
FSC: 5310 — Nuts and Washers
CAGE: 13499 — ROCKWELL COLLINS, INC. DBA COLLINS AEROSPACE GOVERNMENT SYSTEMS DIV COLLINS AEROSPACE - GOVERNMENT SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 631 OVERALL
hole_diameter1.933 INCHES MINIMUM AND 1.933 INCHES MINIMUM AND 1.946 INCHES MAXIMUM1.946 INCHES MAXIMUM IN
overall_height0.269 INCHES MINIMUM AND 0.269 INCHES MINIMUM AND 0.289 INCHES MAXIMUM0.289 INCHES MAXIMUM IN
outside_diameter2.236 INCHES MINIMUM AND 2.236 INCHES MINIMUM AND 2.252 INCHES MAXIMUM2.252 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
material_thickness0.040 INCHES MINIMUM AND 0.040 INCHES MINIMUM AND 0.056 INCHES MAXIMUM0.056 INCHES MAXIMUM IN
minimum_tensile_strength200000 POUNDS PER SQUARE INCH200000 POUNDS PER SQUARE INCH LBS
criticality_code_justificationAAUB AND AAUB AND ABKV AND ABKV AND ABPXABPX
material_document_and_classificationMIL-S-25043 COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classification580-0244-000,FSCM 13499 MFR REF SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-078-2371
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 797-7990-001 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: 580-0244-000,FSCM 13499 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
CRITICALITY CODE JUSTIFICATION: AAUB AND AAUB AND ABKV AND ABKV AND ABPXABPX
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-25043 COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 2.236 INCHES MINIMUM AND 2.236 INCHES MINIMUM AND 2.252 INCHES MAXIMUM2.252 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.040 INCHES MINIMUM AND 0.040 INCHES MINIMUM AND 0.056 INCHES MAXIMUM0.056 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.269 INCHES MINIMUM AND 0.269 INCHES MINIMUM AND 0.289 INCHES MAXIMUM0.289 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION580-0244-000,FSCM 13499 MFR REF SINGLE TREATMENT RESPONSE OVERALL
CRITICALITY CODE JUSTIFICATIONAAUB AND AAUB AND ABKV AND ABKV AND ABPXABPX
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-25043 COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER2.236 INCHES MINIMUM AND 2.236 INCHES MINIMUM AND 2.252 INCHES MAXIMUM2.252 INCHES MAXIMUM IN
MATERIAL THICKNESS0.040 INCHES MINIMUM AND 0.040 INCHES MINIMUM AND 0.056 INCHES MAXIMUM0.056 INCHES MAXIMUM IN
SPECIAL FEATURESTHIS PART IS IN THE PRIMARY AIRCRAFT CONTROL SYSTEM,ANY INCORRECT PART COULD CAUSE LOSS OF LIFE,ALL DIMENSIONS WITH TOLERANCES INDICATED TO BE TIGHTER THAN BLOCK TOLERANCES MUST BE 100 PCT INSPECTEDTHIS PART IS IN THE PRIMARY AIRCRAFT CONTROL SYSTEM,ANY INCORRECT PART COULD CAUSE LOSS OF LIFE,ALL DIMENSIONS WITH TOLERANCES INDICATED TO BE TIGHTER THAN BLOCK TOLERANCES MUST BE 100 PCT INSPECTED
SURFACE TREATMENTPASSIVATE OVERALL
MINIMUM TENSILE STRENGTH200000 POUNDS PER SQUARE INCH200000 POUNDS PER SQUARE INCH LBS
MATERIALSTEEL COMP 631 OVERALL
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
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 797-7990-001?
797-7990-001 is a WASHER,SPRING TENSION.
What is the NSN for 797-7990-001?
797-7990-001 is cataloged in the U.S. Government catalog under NSN 5310-01-078-2371. 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.