PartsTable
Technical Data Sheet
Download PDF

NAS1193K20-2 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

NAS1193K20-2: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 630 OVERALL, hole_diameter: 1.255 INCHES MINIMUM AND 1.275 INCHES MAXIMUM IN, hardness_rating: 44.0 ROCKWELL C MAXIMUM, outside_diameter: 1.750 INCHES MINIMUM AND 1.770 INCHES MAXIMUM IN, special_features: 84 SERRATIONS EQUALLY SPACED AROUND ENTIRE FACE OF WASHER, style_designator: KEY. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-070-9642, 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
NAS1193K20-2
NSN: 5310-01-070-9642
FSC: 5310 — Nuts and Washers
CAGE: 00624 — EATON AEROQUIP LLC DBA JACKSON NORTH 1 DIV FLUID AND ELECTRICAL DISTRIBUTION (USA)
SPECIFICATIONS
materialSTEEL COMP 630 OVERALL
hole_diameter1.255 INCHES MINIMUM AND 1.275 INCHES MAXIMUM IN
hardness_rating44.0 ROCKWELL C MAXIMUM
outside_diameter1.750 INCHES MINIMUM AND 1.770 INCHES MAXIMUM IN
special_features84 SERRATIONS EQUALLY SPACED AROUND ENTIRE FACE OF WASHER
style_designatorKEY
material_thickness0.095 INCHES MINIMUM AND 0.105 INCHES MAXIMUM IN
internal_key_quantity1
internal_straight_key_width0.169 INCHES MINIMUM AND 0.179 INCHES MAXIMUM IN
specification/standard_data80205-NAS1193 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
material_document_and_classificationAMS 5355 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
distance_from_centerline_to_top_of_internal_key0.523 INCHES NOMINAL IN
NSN5310-01-070-9642
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: NAS1193K20-2 · 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
•
INTERNAL STRAIGHT KEY WIDTH: 0.169 INCHES MINIMUM AND 0.179 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 0.523 INCHES NOMINAL IN
•
HARDNESS RATING: 44.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5355 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.750 INCHES MINIMUM AND 1.770 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.095 INCHES MINIMUM AND 0.105 INCHES MAXIMUM IN
•
SPECIFICATION/STANDARD DATA: 80205-NAS1193 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.169 INCHES MINIMUM AND 0.179 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY0.523 INCHES NOMINAL IN
HARDNESS RATING44.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5355 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.750 INCHES MINIMUM AND 1.770 INCHES MAXIMUM IN
MATERIAL THICKNESS0.095 INCHES MINIMUM AND 0.105 INCHES MAXIMUM IN
SPECIFICATION/STANDARD DATA80205-NAS1193 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SPECIAL FEATURES84 SERRATIONS EQUALLY SPACED AROUND ENTIRE FACE OF WASHER
MATERIALSTEEL COMP 630 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 1
NAS1193Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
Ready to buy NAS1193K20-2?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is NAS1193K20-2?
NAS1193K20-2 is a WASHER,KEY.
What parts can replace NAS1193K20-2?
There is 1 known substitute for NAS1193K20-2: NAS1193. Substitute compatibility should be verified for your specific system.
What is the NSN for NAS1193K20-2?
NAS1193K20-2 is cataloged in the U.S. Government catalog under NSN 5310-01-070-9642. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — NAS1193K20-2

✓ 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.