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821-4-22 — COVER,GUN

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

821-4-22: COVER,GUN.

The COVER,GUN is a the manufacturer industrial component. Key specifications include end_item_identification: RIFLE, SEMI-AUTOMATIC, 50C, BARRETT FIRARMS MFG INC. This part is cataloged in the U.S.

Government catalog under NSN 4720-01-016-0442, 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
821-4-22
NSN: 4720-01-016-0442
NIINs: 010160442, 014150155
FSC: 4720 — Hose and Flexible Tubing
CAGE: 98441 — PARKER HANNIFIN CORP DBA PNEUTRONICS DIV STRATOFLEX PRODUCTS DIVISION (USA)
SPECIFICATIONS
end_item_identificationRIFLE, SEMI-AUTOMATIC, 50C, BARRETT FIRARMS MFG INC
NSN4720-01-016-0442
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 821-4-22 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MEASURING METHOD AND LENGTH: 22.000 INCHES NOMINAL OVERALL IN
•
TEMP RATING: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
MINIMUM INSIDE BENDING RADIUS: 2.500 INCHES IN
•
VACUUM IN TORR: 50.8
•
LAYER COMPOSITION AND LOCATION: 1ST LAYER BRAIDED TEXTILE YARN AND OUTER LAYER RUBBER IMPREGNATED BRAIDED COTTON CORD
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
OUTSIDE DIAMETER: 0.500 INCHES NOMINAL IN
•
OPERATING PRESSURE: 350.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
TECHNICAL CHARACTERISTICS
MEASURING METHOD AND LENGTH22.000 INCHES NOMINAL OVERALL IN
TEMP RATING-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
MINIMUM INSIDE BENDING RADIUS2.500 INCHES IN
VACUUM IN TORR50.8
LAYER COMPOSITION AND LOCATION1ST LAYER BRAIDED TEXTILE YARN AND OUTER LAYER RUBBER IMPREGNATED BRAIDED COTTON CORD
CROSS-SECTIONAL SHAPE STYLEROUND
OUTSIDE DIAMETER0.500 INCHES NOMINAL IN
OPERATING PRESSURE350.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
EXTERIOR COLORBLACK
INSIDE DIAMETER0.250 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 3
PC5189468Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5189468Reference document
Same NSN cross-reference
Reference document — Secondary reference
821-4-22.00Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 821-4-22?
821-4-22 is a COVER,GUN.
What parts can replace 821-4-22?
There are 3 known substitutes for 821-4-22: PC5189468, 5189468, 821-4-22.00. Substitute compatibility should be verified for your specific system.
What is the NSN for 821-4-22?
821-4-22 is cataloged in the U.S. Government catalog under NSN 4720-01-016-0442. 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.