PartsTable TECHNICAL DATA SHEET

NSN 5305-01-677-2644Government record, cited

Screw, Tapping5305-01-677-2644

NSN 5305-01-677-2644 · NIIN 016772644 · Part number 93878A193

Mcmaster-Carr Supply Co · FSC 5305 — Screws · FSG 53 — Hardware and Abrasives · CAGE 39428

Government record, cited

NSN 5305-01-677-2644 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-677-2644. Manufacturer of record part number: 93878A193.

Also searched as 5305-01-677-2644 · 5305016772644 · NIIN 016772644 · 01-677-2644 · FSC 5305 Screws · CAGE 39428 · 93878A193 · MA280004 · MA280004-66

Nearby stock numbers ← 5305-01-677-2628 Screw, Machine · 5305-01-677-2710 Screw, Cap, Hexagon Head →

5305-01-677-2644 — Screws

Features

Screw,tapping — FSC 5305
Nonmachine Nominal Thread Diameter: 0.164 INCHES IN
Head Height: 0.115 INCHES NOMINAL IN
Fastener Length: 0.375 INCHES NOMINAL IN
Nonmachine Thread Style: DOG TYPE (TYPE B OR C)
Head Style: PAN
Surface Treatment: ZINC OVERALL
Internal Drive Style: CROSS RECESS TYPE II

Identification

NSN: 5305-01-677-2644
NIIN: 016772644
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives
Primary part number: 93878A193
Manufacturer: Mcmaster-Carr Supply Co

General Description

The Screw,tapping, cataloged under National Stock Number 5305-01-677-2644, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 12 items share a part number with this NSN in the catalog (possible match — not a government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	5305-01-677-2644
Primary Part Number	93878A193
Item Name	Screw,tapping
FSC / FSG	5305 / 53 — Screws
Manufacturer	Mcmaster-Carr Supply Co
Status	ACTIVE
Nonmachine Nominal Thread Diameter	0.164 INCHES IN
Head Height	0.115 INCHES NOMINAL IN
Fastener Length	0.375 INCHES NOMINAL IN
Nonmachine Thread Style	DOG TYPE (TYPE B OR C)
Head Style	PAN
Surface Treatment	ZINC OVERALL
Internal Drive Style	CROSS RECESS TYPE II
Material	STEEL OVERALL
Head Diameter	0.322 INCHES NOMINAL 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 12

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

4730-01-677-3754MA280004-45 POSSIBLE MATCH

ELBOW,TUBE TO BOSS

Possible match (shared part number)The Boeing Company Div Defense

4730-01-677-3759MA280004-43 POSSIBLE MATCH

ELBOW,TUBE TO BOSS

Possible match (shared part number)The Boeing Company Div Defense

4730-01-677-3764MA280004-46 POSSIBLE MATCH

ELBOW,TUBE TO BOSS

Possible match (shared part number)The Boeing Company Div Defense

4730-01-677-3778MA280004-83 POSSIBLE MATCH

ADAPTER,STRAIGHT,TUBE TO BOSS

Possible match (shared part number)The Boeing Company Div Defense

4730-01-677-3790MA280004-92 POSSIBLE MATCH

ELBOW,TUBE TO BOSS

Possible match (shared part number)The Boeing Company Div Defense

4720-01-677-4260MA280004-47 POSSIBLE MATCH

HOSE,NONMETALLIC

Possible match (shared part number)The Boeing Company Div Defense

4710-01-677-4264MA280004-25 POSSIBLE MATCH

TUBE,METALLIC

Possible match (shared part number)The Boeing Company Div Defense

4920-01-677-4299MA280004-2 POSSIBLE MATCH

CASE,TEST SET

Possible match (shared part number)The Boeing Company Div Defense

4920-01-677-4308MA280004-3 POSSIBLE MATCH

CASE,TOOL KIT,AIRCRAFT MAINTENAN

Possible match (shared part number)The Boeing Company Div Defense

4920-01-677-4312MA280004-4 POSSIBLE MATCH

CASE,TOOL KIT,AIRCRAFT MAINTENAN

Possible match (shared part number)The Boeing Company Div Defense

Cross-Reference Index

Part Number	Manufacturer
93878A193	Mcmaster-Carr Supply Co (USA)

Reference documents

Reference	Meaning
MA280004	D/9 Drawing number reference only U.S. Government activity
MA280004-66	3/2 Design control — primary reference U.S. Government activity

Related Parts

4730-01-677-3754POSSIBLE MATCH

ELBOW,TUBE TO BOSS

MA280004-45

4730-01-677-3759POSSIBLE MATCH

ELBOW,TUBE TO BOSS

MA280004-43

4730-01-677-3764POSSIBLE MATCH

ELBOW,TUBE TO BOSS

MA280004-46

4730-01-677-3778POSSIBLE MATCH

ADAPTER,STRAIGHT,TUBE TO BOSS

MA280004-83

4730-01-677-3790POSSIBLE MATCH

ELBOW,TUBE TO BOSS

MA280004-92

4720-01-677-4260POSSIBLE MATCH

HOSE,NONMETALLIC

MA280004-47

4710-01-677-4264POSSIBLE MATCH

TUBE,METALLIC

MA280004-25

4920-01-677-4299POSSIBLE MATCH

CASE,TEST SET

MA280004-2

4920-01-677-4308POSSIBLE MATCH

CASE,TOOL KIT,AIRCRAFT MAINTENAN

MA280004-3

4920-01-677-4312POSSIBLE MATCH

CASE,TOOL KIT,AIRCRAFT MAINTENAN

MA280004-4

4920-01-677-4313POSSIBLE MATCH

CONTROL PANEL,TEST

MA280004-27

5340-01-677-4458POSSIBLE MATCH

RETAINER,NUT AND BOLT

MA280004-15

Frequently Asked Questions

What is NSN 5305-01-677-2644?

NSN 5305-01-677-2644 is a Screw,tapping, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305, Screws. Status: active.

What part numbers are listed for NSN 5305-01-677-2644?

NSN 5305-01-677-2644 has 1 manufacturer part number on file: 93878A193 (Mcmaster-Carr Supply Co).

What NSN replaces 5305-01-677-2644?

12 possible matches (shared part number, not a government interchangeability claim): 4730-01-677-3754, 4730-01-677-3759, 4730-01-677-3764. Verify interchangeability with system specifications before substitution.

What are the specifications of 93878A193?

Key specifications for 93878A193: Nonmachine Nominal Thread Diameter: 0.164 INCHES IN; Head Height: 0.115 INCHES NOMINAL IN; Fastener Length: 0.375 INCHES NOMINAL IN; Nonmachine Thread Style: DOG TYPE (TYPE B OR C). 9 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-677-2644 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