2012 Infiniti Fx37 Lug Nut Torque & Bolt Specs

The 2012 Infiniti Fx37 lug nut torque is 98 ft-lbs (133 Nm), tightened with a 21mm socket on M14x1.25 studs. Torque in a star pattern in two passes (snug, then final), and re-check after the first 50–100 miles of driving. Use a calibrated torque wrench — not an impact gun — for the final pass.

Lug nut torque: 98 ft-lbs (133 Nm) · Socket size: 21mm · Thread: M14x1.25.

This page is the OEM-referenced fastener summary for the 2012 Infiniti Fx37. Use it before any maintenance or repair job where torque values matter — brake work, wheel changes, suspension service, engine teardowns, or oil changes. Specs are pulled from manufacturer service literature, cross-checked against community data, and updated as new chassis variants become available.

Nissan lug-nut torque is 83 ft-lbs (113 Nm) for nearly every passenger model since 2000 with an M12x1.25 thread (note: tighter pitch than Toyota/Honda's M12x1.5 — the lugs do not cross-thread cleanly with neighboring makes). Socket size is 21mm. Titans and Armadas use a larger M14x1.5 thread at 133 ft-lbs.

Common fastener categories on the 2012 Infiniti Fx37

Wheel / lug nut torque and thread spec (covered above)
Brake caliper bracket bolts (typically 80-130 ft-lbs) and slide/guide pins (18-35 ft-lbs)
Engine oil drain plug torque — rarely above 30 ft-lbs; always use a new crush washer
Transmission pan, valve cover, and intake manifold bolts (low torque, often 89-106 in-lbs)
Suspension control arm, sway bar, tie rod end and ball joint torque
Spark plug torque (typically 10-15 ft-lbs on aluminum heads — do not exceed)
Differential cover bolts (RWD/4WD only) and transfer case fasteners

Repair guidance for this model year

For 2012 model-year work: This era introduced widespread torque-to-yield (TTY) bolts on head, main, and crank pulley fasteners. TTY bolts stretch permanently when torqued and must not be reused — the spec calls for a fresh bolt every time. Always verify TTY status against the FSM before reassembly.

Tools you will need

Metric socket set (8mm-22mm), 6-point impact-rated
Calibrated torque wrench (10-150 ft-lbs covers most automotive jobs; add a 0-250 ft-lbs wrench for truck lug nuts)
Breaker bar (24" minimum) for initial loosening
Penetrating oil (PB Blaster or Kroil) for any fastener over 5 years old
Anti-seize on stainless or dissimilar-metal threads; thread-locker (Loctite blue) on critical reassembly

Frequently asked questions

What is the lug nut torque on a 2012 Infiniti Fx37?

The OEM-specified lug-nut torque for the 2012 Infiniti Fx37 is 98 ft-lbs (133 Nm), using a 21mm socket on M14x1.25 thread studs. Use a calibrated torque wrench in a star pattern, in two passes (50% and 100%), and re-check after 50-100 miles of driving.

What socket size do I need for the 2012 Infiniti Fx37 lug nuts?

The 2012 Infiniti Fx37 uses a 21mm socket. A 6-point impact-rated socket is recommended over a 12-point chrome socket — 12-points round off lug nuts under impact-driver use.

Are the 2012 Infiniti Fx37 fasteners metric or SAE?

Metric is the standard for this vehicle. Most fasteners on this vehicle are metric (M6, M8, M10, M12, M14). Bring a full metric set; SAE substitutes can round the head. Bolt-head markings are the fastest way to confirm grade and material at the bench.

Other Infiniti Fx37 years

Same model, different model year — fastener spec may change. Always confirm against the year for your VIN.

→ 2012 Infiniti Fx37 suspension & steering torque specs (control arm, ball joint, tie rod)

All 12 2012 Infiniti Fx37 fastener specs

Per-bolt torque, wrench size, and thread spec for the 2012 Infiniti Fx37, sourced from OEM service literature and verified against community shop data. Values pair imperial (ft-lb) and metric (Nm) where the manufacturer publishes both.

Brakes — 2012 Infiniti Fx37

Brake fasteners on the 2012 Infiniti Fx37 — caliper bracket, slide pins, and banjo bolt torque follow. For the rear, plan for a 17mm tool on a M12x1.25 stud; final torque is 62 ft-lbs (84 Nm) (rear caliper bracket bolt). Rear caliper slide pin tightens to 32 ft-lbs (43 Nm), takes a 13mm driver, runs on M10x1.25 threads, located at the rear. The front caliper bracket bolt uses a 17mm drive on a M12x1.25 thread, torqued to 101 ft-lbs (137 Nm) at the front. At the front, the front caliper slide pin torques to 32 ft-lbs (43 Nm) (13mm drive, M10x1.25 thread).

Engine — 2012 Infiniti Fx37

Engine bolt-by-bolt torque for the 2012 Infiniti Fx37, including the long block, valve covers, and intake. Spark plug tightens to 18 ft-lbs (25 Nm), takes a 5/8 in. driver, runs on M14x1.25 threads. The oil filter uses a 65mm cap drive, torqued to 16 ft-lbs (22 Nm). The oil drain plug torques to 25 ft-lbs (34 Nm) (14mm drive, M14x1.25 thread).

Suspension — 2012 Infiniti Fx37

Suspension and chassis fastener torque for the 2012 Infiniti Fx37 — strut, control arm, and sway bar values. The rear lower control arm bolt uses a 17mm drive on a M12x1.25 thread, torqued to 59 ft-lbs (80 Nm) at the rear. At the front, the front strut top nut torques to 54 ft-lbs (74 Nm) (22mm drive, M14x1.25 thread). For the front, plan for a 17mm tool on a M12x1.25 stud; final torque is 74 ft-lbs (100 Nm) (front lower control arm bolt).

Transmission — 2012 Infiniti Fx37

Transmission fasteners on the 2012 Infiniti Fx37. The transmission drain plug torques to 25 ft-lbs (34 Nm) (10mm hex drive, M14x1.25 thread).

Wheels & Tires — 2012 Infiniti Fx37

Wheels & Tires fasteners on the 2012 Infiniti Fx37. plan for a 21mm tool on a M14x1.25 stud; final torque is 98 ft-lbs (133 Nm) (lug nut).

New to torquing wheels? Read our How lug nut torque works — the complete guide for star-pattern sequence, re-torque intervals, and how to read a lug spec — then use the 2012 Infiniti Fx37 numbers above.

Loading the interactive 2012 Infiniti Fx37 fastener lookup with per-bolt filtering, part links, and torque tools…