Home / Products / Drilling and Exploration / N W/L U Head... N W/L-U Underground Head Assembly Parts List: Processing...ITEM #PART #DESCRIPTIONQTYASM90-20-401-LLNW/L-U HEAD ASSEMBLY190-22-301SPEARHEAD POINT, BNHP WL1290-22-305COILED SPRING PIN1390-22-302SPEARHEAD SPRING1490-22-303DETENT, SPEARHEAD1590-22-404BASE, SPEARHEAD, NWL16476-085SPRING PIN, Ø1/2" X 2" LONG2790-29-406LATCH RETRACTING CASE NWLU1890-29-479NYLON BOLT19476-060SPRING PIN, Ø1/4" X 2" LONG11090-29-409-4WASHER, SPRING RETAINER1113543136SPRING, COMPRESSION NW-LU11290-29-409-1LATCH BODY, UPPER NWLU213104817LINK NW-L21490-21-406COILED SPRING PIN, 1/2" X 1-1/2"115104816LATCH NW-L1163547672VALVE, PISTON BNW-L11790-29-380BUSHING, LANDING INDICATOR11890-29-477ADAPTER, LATCH BODY NWLU11990-29-453SEAL, NWLU PUMP-IN12090-21-478SEAT, LATCH BODY SEAL12190-21-409-2LANDING SHOULDER NWL12290-21-409-3LATCH BODY, LOWER NWL22318WL-NLNORD-LOCK WASHER 1 1/8" & M3022418NHZG5NUT HEX 1-1/8 Z GR512590-21-411SPINDLE NWL12690-21-412USHUT-OFF VALVE12790-21-413WASHER12890-21-414SPINDLE BEARING UPPER12990-21-415BUSHING, SPINDLE, NWL13090-21-424SPINDLE BEARING LOWER13190-21-416COMPRESSION SPRING13212NSZG5NUT STOVER HEX 3/4 Z G513390-21-419INNER TUBE CAP ASSY13490-21-460PROTECTOR, INNER TUBE CAP1WordPress Table