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DL21 — CLAMP,SYNCHRO

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

DL21: CLAMP,SYNCHRO.

The CLAMP,SYNCHRO is a the manufacturer industrial component. Key specifications include width: 0.375 INCHES NOMINAL IN, height: 0.100 INCHES NOMINAL IN, length: 0.313 INCHES NOMINAL IN, material: STEEL COMP 303, hole_diameter: 0.128 INCHES NOMINAL IN, overall_length: 2.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-610-5044, 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
DL21
NSN: 5340-00-610-5044
NIINs: 006105044, 006430339, 015588378
FSC: 5340 — Hardware, Commercial
CAGE: 29964 — ALLIED DEVICES CORP DBA ABSOLUTE PRECISION CO (USA)
SPECIFICATIONS
width0.375 INCHES NOMINAL IN
height0.100 INCHES NOMINAL IN
length0.313 INCHES NOMINAL IN
materialSTEEL COMP 303
hole_diameter0.128 INCHES NOMINAL IN
overall_length2.250 INCHES NOMINAL IN
shank_diameter0.275 INCHES NOMINAL IN
furnished_itemsLOCKNUT
mounting_methodPANEL
effective_height0.052 INCHES NOMINAL IN
outside_diameter0.375 INCHES NOMINAL IN
overall_diameter1.000 INCHES NOMINAL IN
NSN5340-00-610-5044
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: DL21 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SHANK DIAMETER: 0.275 INCHES NOMINAL IN
•
LENGTH: 0.313 INCHES NOMINAL IN
•
STYLE DESIGNATOR: ROUND OR ROUND W/ONE FLAT SIDE
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582,COND A ASSN STD SINGLE MATERIAL RESPONSE
•
OUTSIDE DIAMETER: 0.375 INCHES NOMINAL IN
•
EFFECTIVE HEIGHT: 0.052 INCHES NOMINAL IN
•
HEIGHT: 0.100 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.275 INCHES NOMINAL IN
LENGTH0.313 INCHES NOMINAL IN
STYLE DESIGNATORROUND OR ROUND W/ONE FLAT SIDE
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582,COND A ASSN STD SINGLE MATERIAL RESPONSE
OUTSIDE DIAMETER0.375 INCHES NOMINAL IN
EFFECTIVE HEIGHT0.052 INCHES NOMINAL IN
HEIGHT0.100 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE
WIDTH0.375 INCHES NOMINAL IN
MATERIALSTEEL COMP 303
SUBSTITUTES & CROSS-REFERENCES 9
5340006105044Reference document
Same NSN cross-reference
Reference document — Secondary reference
138C515H02L2-1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
C9Reference document
Same NSN cross-reference
Reference document — Secondary reference
L2-1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
SM-C-805972-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
5267292-001Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is DL21?
DL21 is a CLAMP,SYNCHRO.
What parts can replace DL21?
There are 9 known substitutes for DL21: 5340006105044, 138C515H02L2-1, C9 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DL21?
DL21 is cataloged in the U.S. Government catalog under NSN 5340-00-610-5044. 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.