PartsTable TECHNICAL DATA SHEET

NSN 5310-01-121-6400Government record, cited

Wrench, Stem Nut5310-01-121-6400

NSN 5310-01-121-6400 · NIIN 011216400

FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5310-01-121-6400 · 5310011216400 · NIIN 011216400 · 01-121-6400 · FSC 5310 Nuts and Washers · 845-4687720 ITEM 14 · 2640-682-06 · 845-4687720 · 2640-682-06 ITEM 14

Nearby stock numbers ← 5310-01-121-6200 Washer, Recessed · 5310-01-121-6495 Nut, Self-Locking, Extended Washer →

5310-01-121-6400 — Nuts and Washers

Features

Wrench,stem Nut — FSC 5310
General Characteristics Item Description: STEEL,MIL-S-1222,TYPE 1,SYM B7 SLEEVE SHAPE,TWO 0.175 IN. LUG ON WRENCH END,SIX 0.285 IN. DRILLED HOLES 60.0 DEG APART AROUND DRIVE END,2.032 IN. ID 2.625 IN. OD,5.000 IN. O/A LG IN

Identification

NSN: 5310-01-121-6400
NIIN: 011216400
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives

General Description

The Wrench,stem Nut, cataloged under National Stock Number 5310-01-121-6400, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5310-01-121-6400
Item Name	Wrench,stem Nut
FSC / FSG	5310 / 53 — Nuts and Washers
Status	ACTIVE
General Characteristics Item Description	STEEL,MIL-S-1222,TYPE 1,SYM B7 SLEEVE SHAPE,TWO 0.175 IN. LUG ON WRENCH END,SIX 0.285 IN. DRILLED HOLES 60.0 DEG APART AROUND DRIVE END,2.032 IN. ID 2.625 IN. OD,5.000 IN. O/A LG IN

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

⇄ Related Items 9

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

4820-01-122-82362640-682-05 ITEM 35 POSSIBLE MATCH

CONNECTOR,BALL PULLER

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-128-14162640-682-06 ITEM 36 POSSIBLE MATCH

CONNECTOR,BALL PULLER

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-128-23172640-682-05 ITEM 43 POSSIBLE MATCH

FINGER,RETRACTOR,VALVE BALL

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-128-30112640682-06 ITEM 23 POSSIBLE MATCH

ADAPTER,BALL,PULLER

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

5365-01-133-61722640-682-06 ITEM 41 POSSIBLE MATCH

BUSHING,MACHINE THREAD

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-135-76134687720 ITEM 48 POSSIBLE MATCH

CAP,VALVE

Possible match (shared part number)Naval Ship Systems Command

4820-01-138-30792640-682-06 ITEM 33 POSSIBLE MATCH

CAP,VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-148-2856845-4687720 ITEM 32 POSSIBLE MATCH

LEVER,DISK PULLER

Possible match (shared part number)Naval Ship Systems Command

4820-01-149-34142640-682-06 ITEM 13 POSSIBLE MATCH

WRENCH

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
845-4687720 ITEM 14	3/2 Design control — primary reference U.S. Government activity
2640-682-06	D/9 Drawing number reference only U.S. Government activity
845-4687720	D/9 Drawing number reference only U.S. Government activity
2640-682-06 ITEM 14	5/2 Secondary reference U.S. Government activity

Related Parts

4820-01-122-8236POSSIBLE MATCH

CONNECTOR,BALL PULLER

2640-682-05 ITEM 35

4820-01-128-1416POSSIBLE MATCH

CONNECTOR,BALL PULLER

2640-682-06 ITEM 36

4820-01-128-2317POSSIBLE MATCH

FINGER,RETRACTOR,VALVE BALL

2640-682-05 ITEM 43

4820-01-128-3011POSSIBLE MATCH

ADAPTER,BALL,PULLER

2640682-06 ITEM 23

5365-01-133-6172POSSIBLE MATCH

BUSHING,MACHINE THREAD

2640-682-06 ITEM 41

4820-01-135-7613POSSIBLE MATCH

CAP,VALVE

4687720 ITEM 48

4820-01-138-3079POSSIBLE MATCH

CAP,VALVE

2640-682-06 ITEM 33

4820-01-148-2856POSSIBLE MATCH

LEVER,DISK PULLER

845-4687720 ITEM 32

4820-01-149-3414POSSIBLE MATCH

WRENCH

2640-682-06 ITEM 13

Frequently Asked Questions

What is NSN 5310-01-121-6400?

NSN 5310-01-121-6400 is a Wrench,stem Nut, classified under FSC 5310, Nuts and Washers. Status: active.

What NSN replaces 5310-01-121-6400?

9 possible matches (shared part number, not a government interchangeability claim): 4820-01-122-8236, 4820-01-128-1416, 4820-01-128-2317. Verify interchangeability with system specifications before substitution.

What are the specifications of 5310-01-121-6400?

Key specifications for 5310-01-121-6400: General Characteristics Item Description: STEEL,MIL-S-1222,TYPE 1,SYM B7 SLEEVE SHAPE,TWO 0.175 IN. LUG ON WRENCH END,SIX 0.285 IN. DRILLED HOLES 60.0 DEG APART AROUND DRIVE END,2.032 IN. ID 2.625 IN. OD,5.000 IN. O/A LG IN. 1 specification is documented in the U.S. Government catalog.

Is NSN 5310-01-121-6400 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

PartsTable Design LLC · partstable.com