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Technical Data Sheet
PartsTable / COMPONENT / 5144-50SMD
5144-50SMD ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1060 OR STEEL COMP 1070 OR STEEL COMP 1078 OR STEEL COMP 1080 OR STEEL COMP 1084 OR STEEL COMP 1090, usage_design: EXTERNAL, inside_diameter: 0.381 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN, major_thickness: 0.040 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN, surface_treatment: CADMIUM AND CHROMATE, casehardening_indicator: NOT CASEHARDENED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-116-9577, 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
5144-50SMD
NSN: 5325-01-116-9577
FSC: 5325
CAGE: 79136 — TRUARC COMPANY LLC DBA WALDES TRUARC (USA)
SPECIFICATIONS
materialSTEEL COMP 1060 OR STEEL COMP 1070 OR STEEL COMP 1078 OR STEEL COMP 1080 OR STEEL COMP 1084 OR STEEL COMP 1090
ring_styleE
usage_designEXTERNAL
inside_diameter0.381 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN
major_thickness0.040 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
cross-sectional_shape_styleRECTANGULAR
surface_treatment_document_and_classificationQQ-P-416, TYPE 2, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE
NSN5325-01-116-9577
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5144-50SMD · OEM ⚠ 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
•
MAJOR THICKNESS: 0.040 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN
•
MATERIAL HARDNESS RATING: 47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
INSIDE DIAMETER: 0.381 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN
•
RING STYLE: E
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416, TYPE 2, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI 1060 ASSN STD 1ST MATERIAL RESPONSE OR SAE 1060 ASSN STD 1ST MATERIAL RESPONSE OR FED STD 66 FED STD ALL MATERIAL RESPONSES OR FED STD 66 AISI/SAE 1070 OR 1078 OR 1080 OR 1084 OR 1090 FED STD ALL MATERIAL RESPONSES
TECHNICAL CHARACTERISTICS (FLIS)
MAJOR THICKNESS0.040 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN
MATERIAL HARDNESS RATING47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
CASEHARDENING INDICATORNOT CASEHARDENED
INSIDE DIAMETER0.381 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN
RING STYLEE
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TYPE 2, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONAISI 1060 ASSN STD 1ST MATERIAL RESPONSE OR SAE 1060 ASSN STD 1ST MATERIAL RESPONSE OR FED STD 66 FED STD ALL MATERIAL RESPONSES OR FED STD 66 AISI/SAE 1070 OR 1078 OR 1080 OR 1084 OR 1090 FED STD ALL MATERIAL RESPONSES
SURFACE TREATMENTCADMIUM AND CHROMATE
MATERIALSTEEL COMP 1060 OR STEEL COMP 1070 OR STEEL COMP 1078 OR STEEL COMP 1080 OR STEEL COMP 1084 OR STEEL COMP 1090
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
514450Interchangeable
interchangeable cross-reference
interchangeable
MILT12459Interchangeable
interchangeable cross-reference
interchangeable
514451Interchangeable
interchangeable cross-reference
interchangeable
5.1445.0Interchangeable
interchangeable cross-reference
interchangeable
1220-80Interchangeable
interchangeable cross-reference
interchangeable
356-65070-0Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5144-50SMD?
5144-50SMD is a RING,RETAINING.
What parts can replace 5144-50SMD?
There are 11 known substitutes for 5144-50SMD: 514450, MILT12459, 514451 and 8 more. Substitute compatibility should be verified for your specific system.
Is 5144-50SMD still available?
5144-50SMD is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026