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305803 — LOCK,GUN GAS CYLINDER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

305803: LOCK,GUN GAS CYLINDER.

The LOCK,GUN GAS CYLINDER is a the manufacturer industrial component. Key specifications include special_features: AN FITTING STYLE, end_item_identification: M110K3, part_name_assigned_by_controlling_agency: GAS TUBE. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-687-6511, 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
305803
NSN: 5310-00-687-6511
NIINs: 006876511, 011908602, 017139551
FSC: 5310 — Nuts and Washers
CAGE: 11449 — TURBO POWER & MARINE SYSTEM INC SUB OF UNITED TECHNOLOGIES CORP (USA)
SPECIFICATIONS
special_featuresAN FITTING STYLE
end_item_identificationM110K3
part_name_assigned_by_controlling_agencyGAS TUBE
NSN5310-00-687-6511
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 305803 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
PLATE THICKNESS: 0.037 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN
•
NUT LENGTH: 1.266 INCHES MINIMUM AND 1.296 INCHES MAXIMUM IN
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THREAD SERIES: UNF
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PLATE WIDTH: 0.803 INCHES MINIMUM AND 0.823 INCHES MAXIMUM IN
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MOUNTING HOLE ARRANGEMENT STYLE: 2 HOLES
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MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5510 ASSN STD 1ST MATERIAL RESPONSE BASE
•
MOUNTING HOLE DIAMETER: 0.130 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
PLATE THICKNESS0.037 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN
NUT LENGTH1.266 INCHES MINIMUM AND 1.296 INCHES MAXIMUM IN
THREAD SERIESUNF
PLATE WIDTH0.803 INCHES MINIMUM AND 0.823 INCHES MAXIMUM IN
MOUNTING HOLE ARRANGEMENT STYLE2 HOLES
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5510 ASSN STD 1ST MATERIAL RESPONSE BASE
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5732 ASSN STD 2ND MATERIAL RESPONSE NUT
MOUNTING HOLE DIAMETER0.130 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
FEATURES PROVIDEDFLOATING NUT
THREAD DIRECTIONRIGHT-HAND
SUBSTITUTES & CROSS-REFERENCES 1
ZA21-2860-054Reference 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 305803?
305803 is a LOCK,GUN GAS CYLINDER.
What parts can replace 305803?
There is 1 known substitute for 305803: ZA21-2860-054. Substitute compatibility should be verified for your specific system.
What is the NSN for 305803?
305803 is cataloged in the U.S. Government catalog under NSN 5310-00-687-6511. 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.