PartsTable
Technical Data Sheet
MILB543TY2STYLE3CLASS3SIZE5-8 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The BUCKLE is a the manufacturer industrial component. Key specifications include color: BLACK, insignia: NOT INCLUDED, material: STEEL OVERALL, enameled_feature: INCLUDED, buckle_style_designator: DOUBLE BAR-TONGUELESS, nondefinitive_spec/std_data: 2 TYPE AND 3 STYLE AND 3 CLASS AND 0.625 SIZE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-157-7987, 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
MILB543TY2STYLE3CLASS3SIZE5-8
NSN: 5340-00-157-7987
FSC: 5340
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
colorBLACK
insigniaNOT INCLUDED
materialSTEEL OVERALL
enameled_featureINCLUDED
buckle_style_designatorDOUBLE BAR-TONGUELESS
nondefinitive_spec/std_data2 TYPE AND 3 STYLE AND 3 CLASS AND 0.625 SIZE
specification/standard_data81349-MIL-543 GOVERNMENT SPECIFICATION
material_document_and_classificationQQ-S-698 TEMP 4 OR 5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5340-00-157-7987
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MILB543TY2STYLE3CLASS3SIZE5-8 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
ENAMELED FEATURE: INCLUDED
SPECIFICATION/STANDARD DATA: 81349-MIL-543 GOVERNMENT SPECIFICATION
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-698 TEMP 4 OR 5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
COLOR: BLACK
INSIGNIA: NOT INCLUDED
MATERIAL: STEEL OVERALL
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 3 STYLE AND 3 CLASS AND 0.625 SIZE
BUCKLE STYLE DESIGNATOR: DOUBLE BAR-TONGUELESS
TECHNICAL CHARACTERISTICS (FLIS)
ENAMELED FEATUREINCLUDED
SPECIFICATION/STANDARD DATA81349-MIL-543 GOVERNMENT SPECIFICATION
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-698 TEMP 4 OR 5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
COLORBLACK
INSIGNIANOT INCLUDED
MATERIALSTEEL OVERALL
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 3 STYLE AND 3 CLASS AND 0.625 SIZE
BUCKLE STYLE DESIGNATORDOUBLE BAR-TONGUELESS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
MIL-B-543Interchangeable
interchangeable cross-reference
interchangeable
MS51944-3Interchangeable
interchangeable cross-reference
interchangeable
MS51944-9Interchangeable
interchangeable cross-reference
interchangeable
MS51944-10Interchangeable
interchangeable cross-reference
interchangeable
MS51944-5Interchangeable
interchangeable cross-reference
interchangeable
MS51927-5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy MILB543TY2STYLE3CLASS3SIZE5-8?
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 MILB543TY2STYLE3CLASS3SIZE5-8?
MILB543TY2STYLE3CLASS3SIZE5-8 is a BUCKLE.
What parts can replace MILB543TY2STYLE3CLASS3SIZE5-8?
There are 14 known substitutes for MILB543TY2STYLE3CLASS3SIZE5-8: MIL-B-543, MS51944-3, MS51944-9 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MILB543TY2STYLE3CLASS3SIZE5-8?
MILB543TY2STYLE3CLASS3SIZE5-8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-157-7987. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MILB543TY2STYLE3CLASS3SIZE5-8