Service Part HP OEM Not sure (under 90%) (some fits)
918431-001

HP Nano lock 918431-001

Which laptops does 918431-001 fit? 918431-001 (HP service part) is documented to fit 38 laptop models, including HP EliteBook 640 G9, HP Pro mt440 G3 Mobile Thin Client and HP Fortis x360 11 inch G5 Chromebook and 35 more. Fits come from OEM documentation (HP page), last checked 2026-11-12; not bench-tested. Full compatibility list.

HP spare part description: "Nano lock". Documented OEM replacement; see each fit for configuration limits.

Compatible Laptop & Chromebook Models (38)

Devices documented to accept this OEM component. Compatibility from OEM documentation or a labelled source, with a confidence level on each fit; not bench-tested.

Installation: Not verified

Fits these models

ModelBrandLast checkedConfidence
HP EliteBook 640 G9 All service part for this modelHP2026-11-04OEM documented
HP Pro mt440 G3 Mobile Thin Client All service part for this modelHP2026-11-04OEM documented
HP Fortis x360 11 inch G5 Chromebook All service part for this modelHP2026-11-04OEM documented
HP Fortis G1i 11 inch Chromebook All service part for this modelHP2026-11-04OEM documented
HP Fortis 11 inch G10 Chromebook All service part for this modelHP2026-11-04OEM documented
HP Fortis 14 G11 Chromebook All service part for this modelHP2026-11-04OEM documented
HP Fortis G1i 14 inch Chromebook All service part for this modelHP2026-11-04OEM documented
HP EliteBook 650 G9 All service part for this modelHP2026-11-04OEM documented
HP ProBook 440 G9 All service part for this modelHP2026-11-04OEM documented
HP ProBook 445 G9 All service part for this modelHP2026-11-04OEM documented
HP EliteBook 645 G9 All service part for this modelHP2026-11-04OEM documented
HP ProBook 455 G9 All service part for this modelHP2026-11-04OEM documented
HP EliteBook 640 G11 All service part for this modelHP2026-11-10OEM documented
HP EliteBook 840 G11 All service part for this modelHP2026-11-10OEM documented
HP ZBook Firefly 14 G11 All service part for this modelHP2026-11-10OEM documented
HP EliteBook 1040 G11 All service part for this modelHP2026-11-10OEM documented
HP EliteBook 640 G10 All service part for this modelHP2026-11-12OEM documented
HP EliteBook 830 G7 All service part for this modelHP2026-11-12OEM documented
HP ProBook 440 G10 All service part for this modelHP2026-11-12OEM documented
HP ProBook 640 G8 All service part for this modelHP2026-11-12OEM documented
HP ProBook 650 G8 All service part for this modelHP2026-11-12OEM documented
HP EliteBook 830 G11 All service part for this modelHP2026-11-12OEM documented
HP ProBook 440 G11 All service part for this modelHP2026-11-12OEM documented
HP EliteBook 645 G11 All service part for this modelHP2026-11-12OEM documented
HP ProBook 465 G11 All service part for this modelHP2026-11-12OEM documented
HP EliteBook 840 G10 All service part for this modelHP2026-11-12OEM documented
HP EliteBook 860 G10 All service part for this modelHP2026-11-12OEM documented
HP EliteBook 845 G10 All service part for this modelHP2026-11-12OEM documented
HP EliteBook 645 G10 All service part for this modelHP2026-11-12OEM documented
HP EliteBook 840 G7 All service part for this modelHP2026-11-12OEM documented
HP EliteBook x360 1030 G7 All service part for this modelHP2026-11-12OEM documented
HP ZBook Firefly 14 G9 All service part for this modelHP2026-11-12OEM documented
HP ProBook 450 G10 All service part for this modelHP2026-11-12OEM documented
HP EliteBook 860 G11 All service part for this modelHP2026-11-12Mostly documented (90–99%)
HP Fortis Flip G1i 11 inch Chromebook All service part for this modelHP2026-11-12Not sure (under 90%)
HP Elite c640 14 inch G3 Chromebook All service part for this modelHP2026-11-12Not sure (under 90%)
HP EliteBook x360 1030 G8 All service part for this modelHP2026-11-12Not sure (under 90%)
HP ProBook 450 G9 All service part for this modelHP2026-11-12Not sure (under 90%)

HP EliteBook 640 G9

Business Laptop Display: 14"
View Model →
Fitment Details:

HP description: "Nano lock". Listed in a sibling or family document (tier B). OEM documentation only; not bench-tested.

Source notes

HP Maintenance and Service Guide, Document Part Number N03558-001 (copy saved from support.hp.com), PDF page 34: "918431-001" (Nano lock). (via MG fold)

Fitment Details:

HP description: "Nano lock". Listed in a sibling or family document (tier B). OEM documentation only; not bench-tested.

Source notes

HP Maintenance and Service Guide, Document Part Number N03559-001 (copy saved from support.hp.com), PDF page 34: "918431-001" (Nano lock). (via MG fold). Direct PDF verified by sha256 match with local copy

Fitment Details:

HP description: "Nano lock". Listed in a sibling or family document (tier B). OEM documentation only; not bench-tested.

Source notes

HP Maintenance and Service Guide, Document Part Number N03555-001 (copy saved from support.hp.com), PDF page 35: "918431-001" (Nano lock). (via MG fold)

Fitment Details:

HP spare part: HP Nano Lock. Unverified source; not bench-tested.

Source notes

Manual on file for HP Fortis Flip G1i 11 inch Chromebook Maintenance and Service Guide, PDF page 23: "HP Nano Lock 918431-001". Source link not recorded and not verified as an HP document (red, not sure). (via v10 fold 2026-11-12)

Fitment Details:

HP spare part: HP nano lock. Unverified source; not bench-tested.

Source notes

Manual on file for HP Elite c640 14 inch G3 Chromebook Maintenance and Service Guide, PDF page 22: "HP nano lock 918431-001". Source link not recorded and not verified as an HP document (red, not sure). (via v10 fold 2026-11-12)

HP EliteBook x360 1030 G8

Business Laptop Form: 2-in-1 Convertible
View Model →
Fitment Details:

HP spare part: Duckhead adapter: Nano security lock. Unverified source; not bench-tested.

Source notes

Manual on file for HP EliteBook x360 1030 G8 Maintenance and Service Guide, PDF page 31: "Nano security lock 918431-001". Source link not recorded and not verified as an HP document (red, not sure). (via v10 fold 2026-11-12)

Fits these models

Summary of the documented fits above (sources on each model card); not bench-tested.

ModelBrandType
HP EliteBook 640 G9HPBusiness laptop
HP Pro mt440 G3 Mobile Thin ClientHPBusiness laptop
HP Fortis x360 11 inch G5 ChromebookHPChromebook
HP Fortis G1i 11 inch ChromebookHPChromebook
HP Fortis 11 inch G10 ChromebookHPChromebook
HP Fortis 14 G11 ChromebookHPChromebook
HP Fortis G1i 14 inch ChromebookHPChromebook
HP EliteBook 650 G9HPBusiness laptop
HP ProBook 440 G9HPBusiness laptop
HP ProBook 445 G9HPBusiness laptop
HP EliteBook 645 G9HPBusiness laptop
HP ProBook 455 G9HPBusiness laptop
HP EliteBook 640 G11HPBusiness laptop
HP EliteBook 840 G11HPBusiness laptop
HP ZBook Firefly 14 G11HPBusiness laptop
HP EliteBook 1040 G11HPBusiness laptop
HP EliteBook 640 G10HPBusiness laptop
HP EliteBook 830 G7HPBusiness laptop
HP ProBook 440 G10HPBusiness laptop
HP ProBook 640 G8HPBusiness laptop
HP ProBook 650 G8HPBusiness laptop
HP EliteBook 830 G11HPBusiness laptop
HP ProBook 440 G11HPBusiness laptop
HP EliteBook 645 G11HPBusiness laptop
HP ProBook 465 G11HPBusiness laptop
HP EliteBook 840 G10HPBusiness laptop
HP EliteBook 860 G10HPBusiness laptop
HP EliteBook 845 G10HPBusiness laptop
HP EliteBook 645 G10HPBusiness laptop
HP EliteBook 840 G7HPBusiness laptop
HP EliteBook x360 1030 G7HPBusiness laptop
HP ZBook Firefly 14 G9HPBusiness laptop
HP ProBook 450 G10HPBusiness laptop
HP EliteBook 860 G11HPBusiness laptop
HP Fortis Flip G1i 11 inch ChromebookHPChromebook
HP Elite c640 14 inch G3 ChromebookHPChromebook
HP EliteBook x360 1030 G8HPBusiness laptop
HP ProBook 450 G9HPBusiness laptop

Which service part fits each model?

and 32 more in the compatibility table

Repair guides for the HP EliteBook 645 G9: 20 guides

Fit check: Always confirm the OEM part/FRU number on your machine's label or in the service manual before buying. HP service guide

Key facts

Part number
918431-001
Type
Service Part
Brand
HP
Fits
38 catalog models
Evidence
OEM documented: 33, Mostly documented (90-99%): 1, Not sure (under 90%): 4
Source
support.hp.com
Last checked
2026-11-12
Tested
Not bench-tested; documentation only
Machine-readable
JSON, Markdown