Hydraulic Couplers
Produces a positive leak proof connection with hydraulic fittings

MB PART # Type
Thread Size
Features
Alemite #
Lincoln #
Balcrank #
MB308730 Standard Duty
1/8" NPTF
308730
45076
MB308730-A Standard Duty
1/8" NPTF
Check Valve
308730-A
MB308730-4J Standard Duty
1/8" NPTF
4 Jaws
n/a
MB330070 Standard Duty
1/8" NPTF
Hi PSI-Metal Jaws
B300070
MB5852 Standard Duty
1/8" NPTF
Hex Base-Ball Check
5852
349
MB6304-B Heavy Duty
1/8" NPTF
6304-B
5845
MB6304-C Heavy Duty
1/8" NPTF
Ball check
6304-C
MB5883 Standard Duty
1/8" NPTF
90°
5883
MB310048 Slip-back
1/8" NPTF
Lock Sleeve
310048
81980
42395

Replacement Jaws
These jaws are hardened under precision control methods

MB PART # Type
Alemite #
Balcrank #
MB46567 Double Edge for Heavy Duty Couplers
46567
31527
MB308732 Single Edge for Standard Duty Couplers
308732
35071

Standard Button Head Couplers
Standard coupler for 5/8" headed fittings.

MB PART # Type
Thread
Insert
Alemite #
Lincoln #
MB42030 Pull on
7/16-27"
Rubber
42030
n/a
MB42031 Push on
7/16-27"
Rubber
42031
n/a
MB42030-A Pull on
1/8" Female
Rubber
42030-A
n/a
MB42031-A Push on
1/8" Female
Rubber
42031-A
n/a
MB81458 Pull on/Push on
7/16-27"
Steel
n/a
81458

Giant Button Head Couplers
Giant coupler for 7/8" headed fittings

MB PART # Type
Thread
Insert
Alemite #
Lincoln #
MB304300 Pull on
7/16-27"
Rubber
304300
n/a
MB304300-A Pull on
1/8" Female
Rubber
304300-A
n/a
MB304301 Push on
7/16-27"
Rubber
304300
n/a
MB304301-A Push on
1/8" Female
Rubber
304300-A
n/a
MB80933 Pull on
7/16-27"
Rubber
n/a
80933
MB319702 Pull on
1/4" Female
Rubber
319702
n/a

Pin-Type Couplers

MB PART # Type
Thread
MBVB942 Without Wing Nut
1/8" NPT Female
MB50491 With Wing Nut
1/8" Male
MB51185 With Wing Nut
1/8" Female
AS Fittings MS Fittings NAS Fittings Assortment BACF Grease Fittings Brass British BSF British BSP British BSPP British BSPT Buttonhead Grease Fittings Drive Grease Fittings Grease Fittings Feedline Flush Grease Fittings Hydraulic Grease Fittings Junction Block Leakproof Metric Grease Fittings Monel Grease Fittings Pin Type Grease Fittings Relief Grease Fittings Rivet Grease Fittings Safety Vents Self Threading Grease Fittings Shut-off Special Thread Stainless Accessories Extensions Metric-English Adapters Elbows 45° - 90° Plugs Bushings Lock Nut Male to Female Adapters Male to Male Adapters Female to Female Adapters Couplers Grease Guns Swivels Hoses Plastic Caps Tools