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91898NF — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

91898NF: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL COMP 6150 OVERALL, hole_diameter: 0.565 INCHES MINIMUM AND 0.575 INCHES MAXIMUM IN, overall_height: 0.121 INCHES NOMINAL IN, surface_finish: 63.0 MICROINCHES ALL SURFACES, outside_diameter: 1.105 INCHES MINIMUM AND 1.115 INCHES MAXIMUM IN, style_designator: SPRING TENSION. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-528-5893, 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
91898NF
NSN: 5310-00-528-5893
FSC: 5310 — Nuts and Washers
CAGE: 77535 — ASSOCIATED SPRING US, LLC DIV CORRY (USA)
SPECIFICATIONS
materialSTEEL COMP 6150 OVERALL
hole_diameter0.565 INCHES MINIMUM AND 0.575 INCHES MAXIMUM IN
overall_height0.121 INCHES NOMINAL IN
surface_finish63.0 MICROINCHES ALL SURFACES
outside_diameter1.105 INCHES MINIMUM AND 1.115 INCHES MAXIMUM IN
style_designatorSPRING TENSION
material_thickness0.098 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN
minimum_tensile_strength229000 POUNDS PER SQUARE INCH LBS
material_document_and_classificationMIL-S-18731 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-528-5893
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 91898NF · 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 FINISH: 63.0 MICROINCHES ALL SURFACES
•
STYLE DESIGNATOR: SPRING TENSION
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-18731 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.105 INCHES MINIMUM AND 1.115 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.098 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN
•
MINIMUM TENSILE STRENGTH: 229000 POUNDS PER SQUARE INCH LBS
•
MATERIAL: STEEL COMP 6150 OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES ALL SURFACES
OVERALL HEIGHT0.121 INCHES NOMINAL IN
STYLE DESIGNATORSPRING TENSION
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-18731 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.105 INCHES MINIMUM AND 1.115 INCHES MAXIMUM IN
MATERIAL THICKNESS0.098 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN
MINIMUM TENSILE STRENGTH229000 POUNDS PER SQUARE INCH LBS
MATERIALSTEEL COMP 6150 OVERALL
HOLE DIAMETER0.565 INCHES MINIMUM AND 0.575 INCHES MAXIMUM IN
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 4
68B418007-201Reference document
Same NSN cross-reference
Reference document — Secondary reference
68B418007-203Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
1849A-66BSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1849A66AReference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91898NF?
91898NF is a WASHER,SPRING TENSION.
What parts can replace 91898NF?
There are 4 known substitutes for 91898NF: 68B418007-201, 68B418007-203, 1849A-66B and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 91898NF?
91898NF is cataloged in the U.S. Government catalog under NSN 5310-00-528-5893. 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.