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Wheel Studs and lug nuts for Datsun 1200 are M12x1.25 thread. Nuts are 19mm hex head (~3/4 inch).

Discussion: extra long wheel stud info

1 Specifications
- 1.1 Disc Brakes
- 1.2 Drum
2 Part Numbers
3 Nuts

Specifications

Thread: M12 x 1.25

Torque: 8.0-9.0 kg/m (58-65 ft-lb)
from the 1978 B120 factory service manual (English RHD/LHD)

Drum (clip head) VS Disc (round head)
album

Disc Brakes

* Head Code: 240
* Knurl Diameter: 13.00mm
* Thread Pitch: Right
* Shoulder Length: 10mm
* Thread Size: M12-1.25
* Length: 32mm
* Type: Serrated Stud

Drum

* Nissan Part Number 40222-18000 BOLT-HUB ROAD WHEEL (B110 & B120)
* Head Code: 242
* Knurl Diameter: 12.56mm
* Thread Pitch: Right
* Shoulder Length: 11.5mm
* Thread Size: M12-1.25
* Length: 37.5mm
* Type: Shoulder Stud w/Clip Head

Part Numbers

Front, Drum Brakes

40222-18000 BOLT-hub (for front drum brake)

Front, Disc Brakes

Nissan 40222-22001 BOLT-hub (for disc brake)
Dorman 28321 (Head Code N)
Dorman 610-240 (610240)/610-2401/98320/983201
Wagner/Guardian/One Source BD60980 [knurled] at RockAuto
Raybestos 27792B [knurled]

Stock Fits

1971-1973 Datsun 1200
1980-1981 Datsun 810
1970 Datsun 2000
1974-1975 Datsun B210 USA

 * NOTE: 1976-1978 uses 40222-A0800

1974-1978 Datsun 120Y (A12-powered B210)
1984-1986 Nissan 200SX
1986-1994 Nissan D21 Pickup
1979-1982 Datsun 210
1976-1978 Datsun F10
1970-1973 Datsun 240Z
1998 Nissan Frontier
1974-1975 Datsun 260Z
1982-1984 Datsun Maxima
1975-1978 Datsun 280Z
1987-2006 Nissan Pathfinder
1979-1983 Datsun 280ZX
1995-1997 Nissan Pickup
1984-1986 Nissan 300ZX
1983 Nissan Pulsar
1968-1973 Datsun 510
1983-1986 Nissan Pulsar NX
1973 Datsun 610
1982-1986 Nissan Sentra
1977-1979 Datsun 620
1982-1986 Nissan Stanza
1980-1986 Datsun 720
2000-2006 Nissan Xterra
1997-2003 Infiniti QX4

Head Code N Fits

1972-1973 Datsun 1200
1984-1988 Nissan 200SX
1986 Nissan 720 Pickup
1986-1993 Nissan D21 Pickup
1987-1993 Nissan Pathfinder

Rear

NOTE: Fits B110, B120, B210, B310. Also B110 front drum

For H145, H150 and H165

* Nissan 40222-18000 BOLT-HUB ROAD WHEEL (B110 & B120) $3.60 USD
* Dorman 98340/983401/610242 RockAuto
* Dorman 28340 (Head Code D.4.0)
* NISMO 40222-H5020 [2" long/51mm]
* Wagner BD60951 [non-knurled]
* Raybestos 9340B [non-knurled]

Application:
* B110
* B120
* B210
* B310

Extra Long

Buy at Bprojects
* HKB Sports Racing 47 mm studs
* For disc hubs or drum hubs (have notched heads)
 post

NISMO 40222-A0220 [2" long/51mm]
* For A-series front disc, 510, rear of FWD models, many more

NISMO 40222-H5020 [2" long/51mm]
* For A-series rear drum, front drum

12.9 instead of 13.0 mm knurl. The 510 and Z-car guys use them to replace the front lugs (which are the same as B110).

* 40222-15C01 GC22 Van $2.12 USD each
* 43222-0B001 V40 Quest $9.47 USD each
* NAPA/Balkamp 6412785 $2.29 USD each 
* Dorman 610-403 (610403) $1.34 Rockauto
Type: Serrated Stud 
Thread: M12-1.25 
Knurl Dia.: 12.90mm 
Length: 45.5mm 
Shoulder Length: 15mm 
* Infiniti J30 front 1995-93
* Nissan VAN Front 1988-87, From 1/88
* Nissan QUEST Rear 1998-93, From 1/88

Nuts

Lug Nuts for steel wheels

Nissan 40225-27700 B110 NUT-ROAD WHEEL
Nissan 40224-21000 B310 40224-21001
Nissan 40224-M7210 NUT-ROAD WHEEL (FOR STYLED) [Acorn style] <>  40224-M7200
NISMO 40224-R1120 NUT/TAPERED 
RAYBESTOS Professional Grade 10018N

* Dorman 711406 AutoGrade/RB 711-406-005 Open End-Bulge Seat
* Dorman 611064 Autograde/RB 2029933 (09140-12026, 09159-12020,
   28171XA00A, 30015781, 40225-27700, 6230 06002, 6230 06003)
  ** Standard Open Nut
  ** Thread M12-1.25
  ** Hex Size 19mm
  ** Length 16mm
  ** Seat Angle 60 deg 
  ** Finish Chrome 
* Dorman 611174 AutoGrade/RB 611-174-006 Acorn, Bulge Seat, Hex Size E 
* Dorman 611099 AutoGrade/RB 611-099-006 Acorn, Hex Size A, 1-pc

Alloy Wheel

Nissan 40224-R4626 NUT SET-WITH LOCK (FOR ALMI) (4 sets per car)
Nissan 40224-R4670 NUT-ROAD WHEEL,FOR ALUMINIUM
* B310,R30,F30,E23/E24,K10,910,C31,M10,N12,S110,U11,Z31
* Z Rims

* ALLOY WHEELS
* NISMO 40224-E7200 NUT/SQUARE SHOULDER
** For most alloy wheels. Shank: 19mm (0.748"), Length: 14mm (0.551")
* 40224-R4626 NUT SET-WITH LOCK (FOR ALMI) B310
* 40224-R4670 NUT-ROAD WHEEL,FOR ALUMINIUM B310
* Dorman 611103 AutoGrade/RB kit611-103 Mag-Short Shank
* Dorman 611107 AutoGrade/RB 611-107-006 Mag-Standard (2 pc. construction)

Alternatives

Reportedly fit 1200 disk brakes.

S13 (1989-1994 Silvia) Studs:

Dorman 610320/98350/983501/983551 (S13 Rear & Front, flat head)
- Head Code: 320 (19mm diameter?)
- Knurl Diameter: 12.83mm
- Thread Pitch: Right
- Shoulder Length: 14mm
- Thread Size: M12-1.25
- Length: 41.5mm (~47mm overall)
- Type: Serrated Stud

Fits: Most Datsun/Nissan 1970-2006

Also see: Dorman 28355 (Head Code NS, rounded), somem Datsun/Nissan including S13.

Extra-long Repco Stud S4570:

77mm long overall
72mm long minus head
19mm dia head
Use with Repco Nut: NN421

SSR Mark I and Mark II

SpeedStar Wheels Mark 1 or Mark 2 requires a special nut. Imported from Japan. About $5 each in USA (includes washer). MK-I or MK-II M12 x 1.25, they are NOT tapered, but are shank nuts, although a different diameter than most.


USA: more-japan.om

* 17.1mm shank diameter
* 19mm depth

NiceProducts (Australia) part number M300

Locking Nuts

Magnetic Locks

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Wheel Studs

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