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SW128 — DISK,VALVE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

SW128: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include overall_height: 0.062 INCHES NOMINAL IN, inside_diameter: 0.377 INCHES NOMINAL IN, outside_diameter: 0.873 INCHES NOMINAL IN, special_features: MATERIAL IS VESPEL SP-21, style_designator: PLAIN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-076-2039, 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
SW128
NSN: 5305-00-076-2039
NIINs: 000762039, 014152564, 014988871, 015208785
FSC: 5305 — Screws
CAGE: 73949 — GUARDIAN ELECTRIC MANUFACTURING CO DIV GUARDIAN ELECTRIC MFG CO (USA)
SPECIFICATIONS
overall_height0.062 INCHES NOMINAL IN
inside_diameter0.377 INCHES NOMINAL IN
outside_diameter0.873 INCHES NOMINAL IN
special_featuresMATERIAL IS VESPEL SP-21
style_designatorPLAIN
NSN5305-00-076-2039
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SW128 · 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
•
EXTENDED WASHER THICKNESS: 0.031 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.077 INCHES MINIMUM AND 0.087 INCHES MAXIMUM IN
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SCREW SURFACE TREATMENT: NICKEL
•
FASTENER LENGTH: 0.156 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
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SCREW MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-626,1/2 H FED SPEC SINGLE MATERIAL RESPONSE
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EXTENDED WASHER DIAMETER: 0.187 INCHES NOMINAL IN
•
THREAD LENGTH: 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.099 INCHES IN
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.031 INCHES NOMINAL IN
HEAD HEIGHT0.077 INCHES MINIMUM AND 0.087 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTNICKEL
FASTENER LENGTH0.156 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626,1/2 H FED SPEC SINGLE MATERIAL RESPONSE
EXTENDED WASHER DIAMETER0.187 INCHES NOMINAL IN
THREAD LENGTH0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.099 INCHES IN
HEAD STYLEROUND EXTENDED WASHER
THREAD DIRECTIONRIGHT-HAND
SUBSTITUTES & CROSS-REFERENCES 1
5-000128-00Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SW128?
SW128 is a DISK,VALVE.
What parts can replace SW128?
There is 1 known substitute for SW128: 5-000128-00. Substitute compatibility should be verified for your specific system.
What is the NSN for SW128?
SW128 is cataloged in the U.S. Government catalog under NSN 5305-00-076-2039. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.