Sealed Taper Plug

Sealed taper plug is actually commonly used in our daily lives for example; car, water/gas stop valve, and Hydraulic equipment.
 
Many tapered screw parts are used in automobile parts in conjunction with sealants for hydraulic stop for plugs and joints. To prevent oil leaking, a solid seal is required.

However, just because it would be a problem if oil leaked, it would be very difficult to wrap or install the seal manually.

For this reason, Hanshin Neji has pre-sealed products in stock.

We have stock and sell products called sealed taper plug in variety of sizes.
 
Seal processing is also possible for other screws, so liquid leakage, water leakage, oil leakage etc.

Please feel free to contact us if you have any inquiry of sealing fasteners.
For Hydraulics (Sunk Plug)

Unit : mm
Size and screw threadScrew reference diameterReference diameterWidth across flatHole depthLength
Outer diamer(d)Pitch diameterMinor diameteraToleranceBTolerancem(Min)/Tolerance
R⅛-289.7289.1478.5660.45+1.1
0		5+0.100
+0.030		37 ±0.4
R¼-1913.15712.30111.4450.7+1.5
0		6+0.100
+0.030		4.510 ±0.4
R⅜-1916.66215.80614.95

0.7

+1.5
 0		8+0.130
+0.040		510 ±0.5
R½-1420.95519.79318.6310.9+2
0		10+0.130
+0.040		612.5±0.5 
R¾-14 26.44125.27924.1170.9+2
0		14+0.230
+0.050		714 ±0.5
R1-1133.24931.7730.2911.1+2.2
0		17+0.230
+0.050		917.5 ±0.5
R1¼-1141.9140.43138.9521.1+2.2
0		22+0.275
+0.065		1019  ±0.5
R1½-11 47.803 46.324 44.8451.1  +2.2
0		22 +0.275
+0.065 		10  20 ±0.5
General application (Flat plug)

Unit : mm
Size and screw threadScrew reference diameterReference diameterWidth across flatHole depthLength
Outer diamer(d)Pitch diameterMinor diameteraTolerancebTolerancem(Min)/Tolerance
R⅛-289.7289.1478.5660.97±0.915+0.100
+0.030		38+-0.4
R¼-1913.15712.30111.4456.01±1.346+0.100
+0.030		511+-0.4
R⅜-1916.66215.80614.956.35±1.348+0.130
+0.040		5 12+-0.5
R½-1420.95519.79318.6318.16±1.8110+0.130
+0.040		6.5 15+-0.5
R¾-14 26.44125.27924.1179.53±1.8114+0.230
+0.050		8 17+-0.5
R1-1133.24931.7730.29110.39±2.3117+0.230
+0.050		10 19+-0.5
 R1¼-11 41.9140.431 38.952 12.7 ±2.31 22  +0.275
+0.065		10 21.5 +-0.5
R1½-1147.80346.32444.84512.7±2.3122+0.275
+0.065		10 21.5+-0.5
Square Head Taper Plug

Unit : mm
Size and screw threadScrew reference diameterReference diameterWidth across flatWidth across flatLengthTotal length
Outer diamer(d)Pitch diameterMinor diameteraTolerancebTolerancemn/
R⅛-289.7289.1478.5663.97+-0.917+0
-0.2		7916
R¼-1913.15712.30111.4456.01+-1.349+0
-0.2		81220
R⅜-1916.66215.80614.956.35+-1.3412+0
-0.3		91322
R½-1420.95519.79318.6318.16+-1.8114+0
-0.3		101626
R¾-14 26.44125.27924.1179.53+-1.8117+0
-0.3		111829
R1-1133.24931.7730.29110.39+-2.3119+0
-0.3		142034