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315MK — LOCK SET,MORTISE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

315MK: LOCK SET,MORTISE.

The LOCK SET,MORTISE is a the manufacturer industrial component. Key specifications include shape: RECTANGULAR CASE, width: 1.063 INCHES NOMINAL IN, height: 2.500 INCHES NOMINAL IN, length: 4.000 INCHES NOMINAL IN, material: IRON CASE, bolt_type: UNIVERSAL. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-680-8909, 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
315MK
NSN: 5340-00-680-8909
FSC: 5340 — Hardware, Commercial
CAGE: 66821 — YALE SECURITY INC. DBA NORTON DOOR CONTROL (USA)
SPECIFICATIONS
shapeRECTANGULAR CASE
width1.063 INCHES NOMINAL IN
height2.500 INCHES NOMINAL IN
length4.000 INCHES NOMINAL IN
materialIRON CASE
bolt_typeUNIVERSAL
thickness1.375 INCHES NOMINAL OVERALL IN
face_shapeFLAT
design_typeDEAD BOLT
operation_methodOUTSIDE KEY AND INSIDE THUMBPIECE DOOR PULL
features_providedSTRIKE AND THUMB PIECE AND SCREW
surface_treatmentENAMEL BAKED CASE
NSN5340-00-680-8909
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 315MK 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
•
LOCKING MECHANISM TYPE: PIN TUMBLER
•
LENGTH: 4.000 INCHES NOMINAL IN
•
FACE SHAPE: FLAT
•
DESIGN TYPE: DEAD BOLT
•
KEY CHANGE QUANTITY: 250
•
SHAPE: RECTANGULAR CASE
•
FEATURES PROVIDED: STRIKE AND THUMB PIECE AND SCREW
•
BOLT TYPE: UNIVERSAL
TECHNICAL CHARACTERISTICS
LOCKING MECHANISM TYPEPIN TUMBLER
LENGTH4.000 INCHES NOMINAL IN
FACE SHAPEFLAT
DESIGN TYPEDEAD BOLT
KEY CHANGE QUANTITY250
SHAPERECTANGULAR CASE
FEATURES PROVIDEDSTRIKE AND THUMB PIECE AND SCREW
BOLT TYPEUNIVERSAL
HEIGHT2.500 INCHES NOMINAL IN
SURFACE TREATMENTENAMEL BAKED CASE
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 315MK?
315MK is a LOCK SET,MORTISE.
What is the NSN for 315MK?
315MK is cataloged in the U.S. Government catalog under NSN 5340-00-680-8909. 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.