Protective covers are the part everyone forgets until the connector is exposed on the flight line. Newcastle Industries keeps 159 cover and dust-cap part numbers (10,904 pieces) on the shelf in Los Angeles, most of them Glenair and Amphenol, across every major military circular connector family.
Every part on this page is factory new, in original manufacturer packaging, with lot traceability and a certificate of conformance. Manufacturer certificates are available on request. Quantities are live: they come from our warehouse count in Los Angeles and update as orders ship.
Need a quote? Send the part number and quantity and we answer within one business day, usually the same afternoon. Will-call in Los Angeles, same-day UPS or FedEx, worldwide shipping, C of C with every order.
Request a Quote or call (310) 845-1555 or email sales@newcastleindustries.com
Which cover fits which connector
- MS25042 and MS25043: MIL-DTL-5015 threaded connectors. MS25042 covers receptacles (plug-style cap with a chain), MS25043 covers plugs. The dash number is the shell size (8 to 40); the D or DA suffix is the attachment (chain or chain with ring).
- MS3180 and MS3181: MIL-DTL-26482 Series 1 bayonet connectors (also fit Series 2 shells). MS3180 caps receptacles, MS3181 caps plugs. Suffixes C, CA, CAL, RA, NA describe chain, ring and lanyard attachments.
- MS27501 and MS27502: MIL-DTL-38999 Series I bayonet. MS27501 covers plugs, MS27502 covers receptacles.
- MS27510 and MS27511: MIL-DTL-38999 Series II (the low-profile bayonet family). MS27510 for plugs, MS27511 for receptacles.
- D38999/32 and D38999/33: MIL-DTL-38999 Series III triple-start threaded connectors. /32 covers plugs, /33 covers receptacles. The W or N letter is the finish and the number is the shell size.
All of these are metal caps with a stainless attachment chain or lanyard, and they carry the same finish codes as the connector (N nickel, W olive drab cadmium, A black anodize). Sizing is by shell size, so an MS3181-16CA fits any size 16 26482 plug.
Why buy covers from stock
Cover lead times from the factory run 12 to 20 weeks because they are low-priority items on the line. We keep them on the shelf so a receptacle is never left open waiting on a cap. Most sizes ship the same day.
Every connector dust caps part number in stock (159 lines, 10,904 pcs)
Related pages
- Full stock list
- D38999 connectors in stock
- MIL-DTL-5015 connectors in stock
- MIL-DTL-26482 connectors in stock
Frequently asked questions
What is the difference between MS25042 and MS25043?
MS25042 is the protective cap for MIL-DTL-5015 receptacles and MS25043 is the cap for MIL-DTL-5015 plugs. Both are sized by shell size and come with a chain (D) or chain and attachment ring (DA).
What is the difference between MS3180 and MS3181?
MS3180 caps a MIL-DTL-26482 receptacle; MS3181 caps a MIL-DTL-26482 plug. The dash number is the shell size and the letters describe the chain, ring or lanyard.
Which cover fits a D38999/20 receptacle?
D38999/33 in the matching shell size and finish, for example D38999/33W15N for a size 15 class W receptacle.
Which cover fits an MS27467 plug?
MS27501 in the matching shell size, for example MS27501B25CN for a size 25 plug.
Do the caps seal against moisture?
They are dust and impact covers. Most include a gasket or O-ring that provides a weather seal when torqued, but they are not rated as environmental seals for the mated condition.
Need a quote? Send the part number and quantity and we answer within one business day, usually the same afternoon. Will-call in Los Angeles, same-day UPS or FedEx, worldwide shipping, C of C with every order.
Request a Quote or call (310) 845-1555 or email sales@newcastleindustries.com