PartsTable
Technical Data Sheet
Download PDF

400553 — BLOCK,LEFT

✓ Government record, cited
3M · MRO · MRO_GENERAL
PRODUCT OVERVIEW

400553: BLOCK,LEFT.

The BLOCK,LEFT is a 3M industrial component. Key specifications include fsc_application_data: TELETYPE AND FACSIMILE EQUIPMENT, end_item_identification: TAC-TMDS. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-286-0519, 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→ 400553
NSN: 5305-00-286-0519
NIINs: 002860519, 004663088, 010340736, 014940682
FSC: 5305 — Screws
CAGE: 57733 — STEWART-WARNER CORPORATION (USA)
SPECIFICATIONS
fsc_application_dataTELETYPE AND FACSIMILE EQUIPMENT
end_item_identificationTAC-TMDS
NSN5305-00-286-0519
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 400553 · 3M ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FASTENER LENGTH: 0.562 INCHES NOMINAL IN
•
THREAD LENGTH: 0.562 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.216 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
POINT STYLE: FLAT
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
THREAD CLASS: 3A A
•
THREAD QUANTITY PER INCH: 24
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.562 INCHES NOMINAL IN
THREAD LENGTH0.562 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.216 INCHES IN
THREAD DIRECTIONRIGHT-HAND
POINT STYLEFLAT
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
THREAD CLASS3A A
THREAD QUANTITY PER INCH24
MATERIALCOPPER ALLOY OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 400553?
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 400553?
400553 is a BLOCK,LEFT manufactured by 3M. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 400553?
400553 is cataloged in the U.S. Government catalog under NSN 5305-00-286-0519. 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 — 400553

✓ 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.