PartsTable
Technical Data Sheet
Download PDF

56590 — TELETYPEWRITER SUBASSEMBLY

✓ Government record, cited
Tactic · MRO · MRO_GENERAL
PRODUCT OVERVIEW

56590: TELETYPEWRITER SUBASSEMBLY.

The TELETYPEWRITER SUBASSEMBLY is a Tactic industrial component. Key specifications include special_features: STUD 2; LEVER 1; PAWL 1; HUB 1. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-125-5364, 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
MRO→ MRO_GENERAL→ 56590
NSN: 5310-00-125-5364
NIINs: 001255364, 006978060, 007322886, 013244275, 014433452, 015541487
FSC: 5310 — Nuts and Washers
CAGE: 93835 — PARKER HANNIFIN CORPORATION DIV HYDRAULIC SYSTEMS DIVISION (USA)
SPECIFICATIONS
special_featuresSTUD 2; LEVER 1; PAWL 1; HUB 1
NSN5310-00-125-5364
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 56590 · Tactic ⚠ 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: 32.0 MICROINCHES BOTTOM
•
HARDNESS RATING: 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.4375 INCHES MINIMUM AND 0.4377 INCHES MAXIMUM IN
•
RECESS DEPTH: 0.030 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES BOTTOM
SURFACE FINISH32.0 MICROINCHES TOP
OVERALL HEIGHT0.0445 INCHES MINIMUM AND 0.0455 INCHES MAXIMUM IN
HARDNESS RATING58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.4375 INCHES MINIMUM AND 0.4377 INCHES MAXIMUM IN
RECESS DEPTH0.030 INCHES NOMINAL IN
MATERIAL THICKNESS0.455 INCHES NOMINAL IN
RECESS DIAMETER0.326 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 56590?
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 56590?
56590 is a TELETYPEWRITER SUBASSEMBLY manufactured by Tactic. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 56590?
56590 is cataloged in the U.S. Government catalog under NSN 5310-00-125-5364. 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 — 56590

✓ 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.