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Technical Data Sheet
PartsTable / COMPONENT / LS2728-320
LS2728-320 ✓ 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 RECEPTACLE,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 EJECTOR SPRING, mounting_style: PLAIN W/MOUNTING HOLE, receptacle_width: 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN, receptacle_height: 0.625 INCHES NOMINAL IN, receptacle_overall_length: 120.000 INCHES NOMINAL IN, turnlock_receptacle_style: RECEPTACLE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-036-9305, 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
LS2728-320
NSN: 5325-00-036-9305
FSC: 5325
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 316 EJECTOR SPRING
mounting_stylePLAIN W/MOUNTING HOLE
receptacle_width0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN
receptacle_height0.625 INCHES NOMINAL IN
receptacle_overall_length120.000 INCHES NOMINAL IN
turnlock_receptacle_styleRECEPTACLE
turnlock_mounting_hole_diameter0.128 INCHES NOMINAL IN
material_document_and_classificationQQ-W-423 FED SPEC 1ST MATERIAL RESPONSE EJECTOR SPRING
center_to_center_distance_between_mounting_holes0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
NSN5325-00-036-9305
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: LS2728-320 · 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
•
MATERIAL: STEEL COMP 316 EJECTOR SPRING
•
RECEPTACLE HEIGHT: 0.625 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES: 0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-W-423 FED SPEC 1ST MATERIAL RESPONSE EJECTOR SPRING
•
RECEPTACLE OVERALL LENGTH: 120.000 INCHES NOMINAL IN
•
TURNLOCK MOUNTING HOLE DIAMETER: 0.128 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 316 EJECTOR SPRING
RECEPTACLE HEIGHT0.625 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
MATERIALALUMINUM ALLOY 6061 RECEPTACLE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-423 FED SPEC 1ST MATERIAL RESPONSE EJECTOR SPRING
RECEPTACLE OVERALL LENGTH120.000 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-200/8 FED SPEC 2ND MATERIAL RESPONSE RECEPTACLE
TURNLOCK MOUNTING HOLE DIAMETER0.128 INCHES NOMINAL IN
TURNLOCK RECEPTACLE STYLERECEPTACLE
RECEPTACLE WIDTH0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
100105-2Interchangeable
interchangeable cross-reference
interchangeable
7058773P3Interchangeable
interchangeable cross-reference
interchangeable
3-16STAINLESSSTEELBALLGRADE1Interchangeable
interchangeable cross-reference
interchangeable
C4TZ-6565-BInterchangeable
interchangeable cross-reference
interchangeable
PR-312Interchangeable
interchangeable cross-reference
interchangeable
48045NInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is LS2728-320?
LS2728-320 is a RECEPTACLE,TURNLOCK FASTENER.
What parts can replace LS2728-320?
There are 24 known substitutes for LS2728-320: 100105-2, 7058773P3, 3-16STAINLESSSTEELBALLGRADE1 and 21 more. Substitute compatibility should be verified for your specific system.
Is LS2728-320 still available?
LS2728-320 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